build(deps): bump peter-evans/create-pull-request from 7.0.5 to 7.0.8

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 7.0.5 to 7.0.8.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@5e91468...271a8d0)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/update-protobuf.yml

@@ -25,7 +25,7 @@ jobs:
           ./update-sha.sh ${{ inputs.envoy_version }} | tee API_SHAS
           ./update-api.sh
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@5e914681df9dc83aa4e4905692ca88beb2f9e91f  # v7.0.5
+        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e  # v7.0.8
         with:
           branch: update-protobuf-to-${{ inputs.envoy_version }}
           base: main