Update workflow to use Ubuntu 24.04 and upgrade actions versions

Author: klauserber

.github/workflows/container_build.yml

@@ -13,10 +13,10 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
@@ -49,7 +49,7 @@ jobs:
             type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
 
       - name: Build and push
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: linux/amd64  # ,linux/arm64