Update peter-evans/create-pull-request action to v8 (#458)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/update-l10n.yml

@@ -39,7 +39,7 @@ jobs:
 
       - name: Create Pull Request 🆕
         if: env.NUM_DIFFS > 1
-        uses: peter-evans/create-pull-request@v7
+        uses: peter-evans/create-pull-request@v8
         with:
           commit-message: Update localization source file
           branch: update/l10n-source-file