build(deps): bump actions/checkout from 3.6.0 to 4.0.0 (#11786)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.6.0 to 4.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v3.6.0...v4.0.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/docker-develop.yml

@@ -13,7 +13,7 @@ jobs:
     if: github.repository == 'misskey-dev/misskey'
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4.0.0
       - name: Set up Docker Buildx
         id: buildx
         uses: docker/setup-buildx-action@v2.10.0