build(deps): Update git requirement from ~> 4.0 to ~> 5.0

[dependabot]

Updates the requirements on git to permit the latest version.

Release notes

Sourced from git's releases.

v5.0.0

5.0.0 (2026-07-28)

� BREAKING CHANGES

• Git::Base and Git::Lib are removed. All public API is now surfaced through Git::Repository (for repo-bound operations) and the Git module-level methods (Git.open, .clone, .init, .bare, .default_branch, .git_version). Internal command execution goes through Git::Commands::* and Git::ExecutionContext, not Git::Lib.
• Git.open, Git.bare, Git.clone, and Git.init now return Git::Repository instead of Git::Base. Code that depends on the Git::Base return type must be updated to use Git::Repository. Git::Repository provides all the same public API methods as Git::Base.
• arguments: flag_option :foo, negatable: true no longer accepts false to emit --no-foo. Before: bind(foo: false) => ["--no-foo"]. After: register two entries; bind(no_foo: true) => ["--no-foo"]. Callers passing foo: false expecting --no-foo will silently get nothing emitted.

Features

• Add branch_current delegator to Git::Base (8b92b54)
• Add deprecated config_get/list/set aliases to Git::Repository::Configuring (fb964d3)
• Add deprecated conflicts wrapper on Git::Repository::Merging (cc3907d)
• Add deprecated empty? wrapper on Git::Repository::StatusOperations (e0dbd1c)
• Add deprecated Git::Repository::Stashing#stash_list facade (9e532bd)
• Add Git::Base compatibility shim with deprecation warnings (d37710b)
• Add Git::MINIMUM_GIT_VERSION constant (d5c8604)
• Add Git::Repository remote_names facade method (4f52a7b)
• Add Git::Repository::Branching#change_head_branch facade (e8d6af6)
• Add Git::Repository::Branching#current_branch_state facade (fa798a7)
• Add Git::Repository::Configuring#global_config facade and deprecated aliases (12b2e59)
• Add Git::Repository::Diffing#diff factory (33db465)
• Add Git::Repository::Merging#unmerged facade (7d4b1fe)
• Add Git::Repository::RemoteOperations#ls_remote facade (4c63567)
• Add Git::Repository#branches factory to Branching module (92e4cc6)
• Add Git::RepositoryContext and Git::GlobalContext (Phase 3 Task 1) (e2b94ca)
• Add Git::Version class for git binary versions (d97b5e3)
• Add Git::VersionConstraint value object (28599f0)
• Add Git::VersionError exception class (8ed8713)
• Add upstream and upstream_remote to Git::Branch (ef16e94), closes #1270
• Allow deprecation behavior env var (49ae5a8)
• api: Add Git.git_version method (7ae54f3), closes #1249
• arguments: Replace negatable tri-state with no_{flag} companion key (#1260) (e305922)
• base: Add diff_numstat delegator to Git::Base (5a8a0ec)
• base: Add Git::Base delegators for 23 Bucket 6 orphans (513e6a2)
• base: Add Git::Base#git_version delegator (026f738)
• branching: Add deprecated is_branch?/is_local_branch?/is_remote_branch? stubs (9484e4f)
• branching: Add local_branch?, remote_branch?, branch? facade methods (14dd2b3)
• commands: Add Git::Commands::Maintenance subcommand classes (5404c5a)
• commands: Add requires_git_version macro and validation (3c1f1ec)
• commands: Add validate_version! to custom #call implementations (9deec1f)
• config: Add Git::Configuring mixin, parsers, and ConfigEntryInfo (cf0d813)
• config: Extend Git::Configuring into the Git module (eb5be7a)
• config: Include Git::Configuring in Git::Repository and remove clashing deprecated aliases (68ca900)
• diff_stats: Migrate DiffStats to Git::Repository and add diff_stats factory (1a7b28f)
• execution-context: Add binary_path: keyword and retire Open3 stopgap (bf94218)
• execution-context: Forward binary_path from Git::Base via from_base (8e9af8f)
• Extend config() with :file option for reads; add deprecated parse_config wrapper (c2be049)

... (truncated)

Changelog

Sourced from git's changelog.

5.0.0 (2026-07-28)

v5.0.0 is a complete architectural redesign of the git gem. The monolithic Git::Base and Git::Lib classes have been replaced by a layered design: Git::Commands::* for git command execution, Git::Repository as the public API surface, and dedicated parser classes. Most v4.x code requires no changes — compatibility shims emit deprecation warnings pointing to the v5.x equivalents.

For a full migration guide, including deprecated method renames and code examples, see https://github.com/ruby-git/ruby-git/blob/main/UPGRADING.md.

⚠ BREAKING CHANGES

• Git::Base class removed; constant remains as a deprecated shim. Git::Base.new raises an error and require 'git/base' raises LoadError. The Git::Base constant still exists as a deprecated module included in Git::Repository, so is_a?(Git::Base) checks and monkeypatches continue to work but emit deprecation warnings. Update explicit Git::Base class references to use Git::Repository; the shim is removed in v6.0.0.
• Git::Lib removed. Calling #lib on a repository object returns self with a deprecation warning (forwarding to Git::Repository methods where possible), but Git::Lib itself no longer exists. Methods unique to Git::Lib with no Git::Repository counterpart raise NoMethodError.
• Git.open, Git.bare, Git.clone, and Git.init return Git::Repository instead of Git::Base. For most callers this is transparent. Code that explicitly checks is_a?(Git::Base) must be updated to is_a?(Git::Repository).
• Unsupported options now raise ArgumentError. Unknown keyword options that were silently ignored in v4.x may now raise ArgumentError. Check option names against the documented API when upgrading.
• Git::Log#object is not a path limiter. Use Git::Log#path to filter log results by file path.
• Git::CommandLineResult is deprecated (removed in v6.0.0). Use Git::CommandLine::Result instead.

For the full list of commits included in this release, see the v5.0.0 commit history.

4.1.2 (2026-01-10)

Other Changes

• Add Continuity section to Governance (a2f644c)
• Add Roberto Decurnex to Maintainers Emeritus (5104537)
• Enable releases from 4.x maintenance branch (5377de6)
• Move inactive maintainers to Emeritus per governance policy (f09e4d1)

4.1.1 (2026-01-09)

... (truncated)

Commits

• b28c306 chore: release v5.0.0
• 8887679 docs: announce v5.0.0 stable release in README
• 5ca6280 docs: fold remaining threads into #1635 and #1640
• d7d1c37 docs: track Git::Remote deprecation (#1643) in migration plan
• 4998b40 docs: add Info/DAO migration plan and issue index to redesign/
• 0b8d98d docs: improve README clarity and accuracy
• 413074b test: cover merge BranchInfo coercion
• e56913e fix(branch): wire branch_list slash remote parsing
• 6f8f43a fix(branch): parse slash remote names
• 9524654 docs: add branch_parse_refactor_plan to redesign/
• Additional commits viewable in compare view

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