Fix baseimage check

Author: thespad

.github/workflows/call-baseimage-update.yml

@@ -11,7 +11,7 @@ jobs:
     with:
       repo_owner: "thespad"
       baseimage: "alpine"
-      basebranch: "3.19"
+      basebranch: "3.20"
       app_name: "py-kms"
     secrets:
       repo_scoped_token: ${{ secrets.repo_scoped_token }}