fix(deps): Update module github.com/bluekeyes/go-gitdiff to v0.7.1 (#9603)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [github.com/bluekeyes/go-gitdiff](https://togithub.com/bluekeyes/go-gitdiff) | require | patch | `v0.7.0` -> `v0.7.1` |

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### Release Notes

<details>
<summary>bluekeyes/go-gitdiff</summary>

### [`v0.7.1`](https://togithub.com/bluekeyes/go-gitdiff/releases/tag/v0.7.1)

[Compare Source](https://togithub.com/bluekeyes/go-gitdiff/compare/v0.7.0...v0.7.1)

##### Fixes

-   Fix error parsing mode lines with trailing whitespace ([#&#8203;38](https://togithub.com/bluekeyes/go-gitdiff/issues/38))

</details>

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