Bump gix from 0.67.0 to 0.68.0 in the deps group

[dependabot]

Bumps the deps group with 1 update: gix.

Updates gix from 0.67.0 to 0.68.0

Release notes

Sourced from gix's releases.

gix v0.68.0

New Features

• Add support for index application in merge results via merge::tree::Outcome::index_changed_after_applying_conflicts()

• add Repository::merge_base_octopus()

• add Repository::virtual_merge_base() and Repository::virtual_merge_base_with_graph().

• add Repository::merge_commits() It's often more convenient to work with commits when merging, especially when merge-bases are dealt with automatically.

• add objects::tree::Editor::detach() to get the underlying editor back. This can be useful to have more control over what gets written, or how.

• add Repository::index_or_load_from_head_or_empty(). It's useful to get a reasonable index in any case, even on unborn repositories. It's for cases where the HEAD isn't setup at all, despite content being available, and to avoid unnecessary restrictions on what works.

• add Object::peel_to_commit() to assure an object turns into a commit.

• add Repository::merge_trees()

• gix::Repository implements all traits for object reading and writing. That way it becomes usable when merging trees, which benefits from automatic checking of hashes before writing loose objects.

• add tree() and commit() merge support, en par with merge-ORT as far as tests go. Note that this judgement of quality is based on a limited amount of partially complex test, but it's likely that in practice there will be deviations of sorts.

  Also, given the complexity of the implementation it is definitely under-tested, but with that it's mostly en par with Git, unfortunatly.

  On the bright side, some of the tests are very taxing and I'd hope this means something for real-world quality.

Bug Fixes

• Repository::tree_merge_options() now comes with rewrite tracking. This is the way Git acts, as it's either configured, or defaults to the value coming from the diff.renames configuration.

• respect core.bare=true in conjunction with the main worktree

• propagate errors that are triggered when writing objects Previously it was assumed that writing objects could never fail unless there isn't enough memory to do so. However, it turns out that some last-minute validation can always be triggered and prevent an object to be written.

  Now that error is propagated instead.

• assure submodules are skipped everywhere This also adds Repository::head_tree() for convenience.

New Features (BREAKING)

• Repository::merge_trees() now takes portable version of Options.
• Repository::merge_trees() now has a fully-wrapped outcome.

... (truncated)

Commits

• 4000197 Release gix-glob v0.17.1, gix-command v0.3.11, gix-filter v0.15.0, gix-chunk ...
• 9d627bb prepare changelogs once more
• 4145d2a fix gix-path version (which fails publishing due to the patch-level mismatch)
• 8ce4912 Release gix-date v0.9.2, gix-actor v0.33.1, gix-hash v0.15.1, gix-features v0...
• bc9d994 prepare changelogs prior to release
• 54ea266 Merge pull request #1700 from GitoxideLabs/reduce-memory
• 664e28c try to reduce memory consumption by avoiding over-capacity of possibly large ...
• 0b7abfb Merge pull request #1661 from GitoxideLabs/merge
• 71b0cea feat: Add support for index application in merge results via `merge::tree::...
• 3ee8b62 feat: provide a way to record and apply index changes.
• Additional commits viewable in compare view

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