Bump PR step version

Author: theletterf

.github/workflows/update-kube-stack-version.yml

@@ -42,7 +42,7 @@ jobs:
     
     - name: Create Pull Request
       if: steps.verify-changed-files.outputs.changed == 'true'
-      uses: peter-evans/create-pull-request@v5
+      uses: peter-evans/create-pull-request@v7
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
         commit-message: "chore: update kube-stack version"