build(deps): bump peter-evans/create-pull-request from 7.0.6 to 7.0.8

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 7.0.6 to 7.0.8.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](peter-evans/create-pull-request@67ccf78...271a8d0)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
  dependency-version: 7.0.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Diff for: .github/workflows/update-cache-tests.yml

@@ -36,7 +36,7 @@ jobs:
           rm -rf test/fixtures/tmp-cache-tests/
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@67ccf781d68cd99b580ae25a5c18a1cc84ffff1f # v7.0.6
+        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e # v7.0.8
         with:
           base: main
           branch: cache-tests-update

Diff for: .github/workflows/update-wpt.yml

@@ -42,7 +42,7 @@ jobs:
 
           rm -rf test/fixtures/tmp-wpt
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@67ccf781d68cd99b580ae25a5c18a1cc84ffff1f # v7.0.6
+        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e # v7.0.8
         with:
           base: main
           branch: wpt-update