ci: drop arm64 Docker build until native runner available

Author: mohitgauniyal

.github/workflows/release.yml

@@ -81,7 +81,7 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           context: .
-          platforms: linux/amd64,linux/arm64
+          platforms: linux/amd64
           push: true
           tags: |
             mohitgauniyal/instbyte:latest