build(deps): bump actions/checkout from 3 to 4 (#332)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
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>

.github/workflows/_build_image.yml

@@ -49,7 +49,7 @@ jobs:
     - uses: envoyproxy/toolshed/gh-actions/[email protected]
       name: 'Free disk space'
     - name: 'Checkout repository'
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - run: |
         CONTAINER_TAG=$(git log -1 --pretty=format:"%H" "./docker")
         echo "tag=${CONTAINER_TAG}" >> "$GITHUB_OUTPUT"

.github/workflows/_regenerate_toolchain.yml

@@ -35,7 +35,7 @@ jobs:
         key: ${{ secrets.bot_key }}
         app_id: ${{ secrets.bot_id }}
     - name: 'Checkout Repository'
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
         token: ${{ steps.appauth.outputs.token }}