fix(ci): use updated container for stats workflow

.gitea/workflows/update-readme.yaml

@@ -9,6 +9,8 @@ on:
 jobs:
   sync-stats:
     runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/catthehacker/ubuntu:act-24.04
     steps:
       - name: Manual Internal Checkout
         run: |
@@ -20,18 +22,16 @@ jobs:
           git fetch origin
           git rebase origin/${{ github.ref_name }}
 
+      - name: Install dependencies
+        env:
+          DEBIAN_FRONTEND: noninteractive
+        run: |
+          set -eu
+          apt-get update
+          apt-get install -y --no-install-recommends jq python3
+
       - name: Process Statistics and Update README
         run: |
-          if ! command -v jq &> /dev/null; then
-            if command -v apk &> /dev/null; then apk add --no-cache jq;
-            elif command -v apt-get &> /dev/null; then apt-get update && apt-get install -y jq; fi
-          fi
-
-          if ! command -v python3 &> /dev/null; then
-            if command -v apk &> /dev/null; then apk add --no-cache python3;
-            elif command -v apt-get &> /dev/null; then apt-get update && apt-get install -y python3; fi
-          fi
-
           # Use our own heatmap.json instead of Gitea API
           HEATMAP_FILE="public/heatmap.json"
           TOTAL_COMMITS=$(jq '[.days[] | .count] | add' "$HEATMAP_FILE")