⬆️ Bump actions/checkout from 2.4.0 to 3.3.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.4.0 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@v2.4.0...v3.3.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yaml

@@ -33,7 +33,7 @@ jobs:
           override: true
           profile: ${{matrix.os.profile_rustup}}
       - uses: davidB/rust-cargo-make@v1
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v3.3.0
       - name: Run tests
         run: cargo make --profile "${{matrix.os.profile_ci_flow}}" ci-flow
         env: