Update docker/build-push-action action to v7

Author: renovate[bot]

.github/workflows/build.yaml

@@ -35,7 +35,7 @@ jobs:
         uses: docker/setup-buildx-action@v4
 
       - name: Build stable
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           push: ${{ inputs.push }}
           tags: tobix/wine:stable
@@ -45,7 +45,7 @@ jobs:
           cache-to: type=local,dest=/tmp/buildx-cache,mode=max
 
       - name: Build devel
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           push: ${{ inputs.push }}
           tags: tobix/wine:devel
@@ -55,7 +55,7 @@ jobs:
           cache-from: type=local,src=/tmp/buildx-cache
 
       - name: Build staging
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@v7
         with:
           push: ${{ inputs.push }}
           tags: tobix/wine:staging