chore(deps): update docker/build-push-action digest to 84ad562 (#185)

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

Author: renovate[bot]

.github/workflows/buildx-ci.yml

@@ -29,7 +29,7 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Build and export to Docker
-        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4
+        uses: docker/build-push-action@84ad562665bb303b549fec655d1b64f9945f3f91
         with:
           context: .
           load: true
@@ -38,7 +38,7 @@ jobs:
         run: |
           docker run --rm ${{ env.TESTING_TAG }}
       - name: Build and push
-        uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4
+        uses: docker/build-push-action@84ad562665bb303b549fec655d1b64f9945f3f91
         with:
           context: .
           platforms: linux/amd64,linux/arm64