build(deps): bump actions/checkout from 3.5.2 to 4.1.1 (#441)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.5.2 to 4.1.1. - [Release notes](https://github.com/actions/checkout/releases) - [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md) - [Commits](actions/checkout@8e5e7e5...b4ffde6) --- 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>

Author: dependabot[bot]

.github/workflows/conformance.yml

@@ -35,7 +35,7 @@ jobs:
  sdk: stable
  - run: dart --version
 
- - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab
+ - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
  - run: dart pub upgrade
  working-directory: integration_test