fix(ci): use actions/checkout@v4 instead of non-existent v5

Author: TineoC

.github/workflows/containers-publish.yml

@@ -14,7 +14,7 @@ jobs:
     name: Build and Push
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v4
 
       - name: Login to ghcr.io Docker registry
         uses: docker/login-action@v3