fix(fixture): support running fixtures on mingw64

[bukowa]

Description

Fixes https://github.com/orhun/git-cliff/issues/705

Motivation and Context

See issue.

How Has This Been Tested?

Locally.

Screenshots / Logs (if applicable)

Types of Changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Documentation (no code change)
• [ ] Refactor (refactoring production code)
• [x] Other

Checklist:

• [x] My code follows the code style of this project.
• [ ] I have updated the documentation accordingly.
• [ ] I have formatted the code with rustfmt.
• [ ] I checked the lints with clippy.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 36.22%. Comparing base (bea4916) to head (c23201e).

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #708 +/- ## ======================================= Coverage 36.22% 36.22% ======================================= Files 19 19 Lines 1455 1455 ======================================= Hits 527 527 Misses 928 928 ``` | [Flag](https://app.codecov.io/gh/orhun/git-cliff/pull/708/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Orhun+Parmaks%C4%B1z) | Coverage Δ | | |---|---|---| | [unit-tests](https://app.codecov.io/gh/orhun/git-cliff/pull/708/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Orhun+Parmaks%C4%B1z) | `36.22% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Orhun+Parmaks%C4%B1z#carryforward-flags-in-the-pull-request-comment) to find out more.

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