Fix sponsors workflow

Author: leaanthony

.github/workflows/generate-sponsor-image.yml

@@ -25,7 +25,7 @@ jobs:
           SPONSORKIT_GITHUB_LOGIN: wailsapp
 
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v4
+        uses: peter-evans/create-pull-request@v6
         with:
           commit-message: "chore: update sponsors.svg"
           add-paths: "website/static/img/sponsors.svg"