Bump actions/checkout from 1 to 3 (#713)

Bumps [actions/checkout](https://github.com/actions/checkout) from 1 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v1...v3)

---
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/release.yml

@@ -9,7 +9,7 @@ jobs:
      runs-on: ubuntu-latest
      if: github.event.pull_request.merged == true && true == contains(join(github.event.pull_request.labels.*.name), 'Release')
      steps:
-     - uses: actions/checkout@v1
+     - uses: actions/checkout@v3
      - uses: elementary/actions/release@master
        env:
          GIT_USER_TOKEN: "${{ secrets.GIT_USER_TOKEN }}"