Bump docker/build-push-action from 5 to 6 (#36)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/docker-image.yml

@@ -51,7 +51,7 @@ jobs:
                   fi
 
             - name: Build and push multi-platform image
-              uses: docker/build-push-action@v5
+              uses: docker/build-push-action@v6
               with:
                   context: .
                   platforms: linux/amd64,linux/arm64