Update docker/build-push-action action to v6

.github/workflows/build-docker-image.yaml

@@ -24,7 +24,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Build and push
         id: docker_build
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           push: true
           tags: |

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.13-alpine
+FROM python:3.11-alpine
 
 COPY requirements.txt /app/
 COPY aaisp2mqtt.py /app/