chore(deps): update peter-evans/create-pull-request action to v8

Author: renovate[bot]

.github/workflows/update-prompt-docs.yml

@@ -55,7 +55,7 @@ jobs:
 
       - name: Create Pull Request
         if: steps.git-check.outputs.changed == 'true'
-        uses: peter-evans/create-pull-request@v7
+        uses: peter-evans/create-pull-request@v8
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           commit-message: 'docs: update prompts documentation'