Update docker/build-push-action action to v7 (#64)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/image-build.yml

@@ -19,7 +19,7 @@ jobs:
       uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0
 
     - name: Build Docker image
-      uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
+      uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294 # v7.0.0
       with:
         context: .
         platforms: linux/amd64,linux/arm64

.github/workflows/release.yml

@@ -51,7 +51,7 @@ jobs:
             type=raw,value=${{ steps.tag.outputs.VERSION }}
 
       - name: Build and push container
-        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
+        uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294 # v7.0.0
         with:
           context: .
           platforms: linux/amd64,linux/arm64