build: update peter-evans/create-pull-request action to v8

See associated pull request for more information.

Author: angular-robot

.github/workflows/cross-repo-adev-docs.yml

@@ -37,7 +37,7 @@ jobs:
           ANGULAR_READONLY_GITHUB_TOKEN: ${{ secrets.READONLY_GITHUB_TOKEN }}
 
       - name: Create a PR (if necessary)
-        uses: peter-evans/create-pull-request@22a9089034f40e5a961c8808d113e2c98fb63676 # v7.0.11
+        uses: peter-evans/create-pull-request@98357b18bf14b5342f975ff684046ec3b2a07725 # v8.0.0
         with:
           token: ${{ secrets.ANGULAR_ROBOT_ACCESS_TOKEN }}
           push-to-fork: 'angular-robot/angular'