Bump actions/checkout from 3.1.0 to 3.3.0 (#7)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.1.0 to 3.3.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3.1.0...v3.3.0)

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

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

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3.1.0
+    - uses: actions/checkout@v3.3.0
       with:
         fetch-depth: 0
         submodules: true
@@ -28,7 +28,7 @@ jobs:
     if: github.event_name == 'push'
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3.1.0
+    - uses: actions/checkout@v3.3.0
       with:
         fetch-depth: 0
         submodules: true