Fix cron and codeberg registry not working

.forgejo/workflows/build.yaml

@@ -1,12 +1,12 @@
 on:
   push:
   schedule:
-    - cron:  '0 * * * *'
+    - cron:  '0 23 * * *'
 jobs:
   build_image:
     name: Build image
     env:
-      VERSION: 1.21
+      FORGEJO_VERSION: 1.21
       SCHEDULED: ${{ github.event_name == 'schedule' }}
       PUSHED: ${{ github.event_name == 'push' }} 
       REGISTRY: git.korhonen.cc
@@ -16,7 +16,7 @@ jobs:
       - name: Check if update available
         if: env.SCHEDULED
         id: check
-        uses: https://github.com/lucacome/docker-image-update-checker@v1
+        uses: https://github.com/giggio/docker-image-update-checker@v2
         with:
           base-image: codeberg.org/forgejo/forgejo:${{ env.FORGEJO_VERSION }}
           image: ${{ env.REPO }}:latest