build(deps): bump actions/checkout from 2.7.0 to 4.1.1 (#306)

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.7.0 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@v2.7.0...b4ffde6)

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

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

Author: dependabot[bot]

.github/workflows/compare-envoy-versions.yml

@@ -16,7 +16,7 @@ jobs:
     outputs:
       target-version: ${{ steps.compare-latest-to-current-version.outputs.target-version }}
     steps:
-      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5  # v2.7.0
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11  # v4.1.1
       - name: Fetch latest Envoy version
         id: latest-envoy-version
         run: |

.github/workflows/update-protobuf.yml

@@ -18,7 +18,7 @@ jobs:
       pull-requests: write
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5  # v2.7.0
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11  # v4.1.1
       - name: Run scripts
         working-directory: ./tools/
         run: |