builds: Remove workaround for building linux arm64

.gitlab-ci.yml

@@ -299,16 +299,7 @@ build_linux_x86:
 build_linux_arm64:
   stage: build
   before_script:
-    # Workaround from https://github.com/flutter/flutter/issues/116703#issuecomment-1403956612
-    - rm -rf workaround116703
-    - mkdir workaround116703
-    - cd workaround116703
-    - curl -O https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_${FLUTTER_VERSION}-stable.tar.xz
-    - tar -xvf flutter_linux_${FLUTTER_VERSION}-stable.tar.xz flutter/bin/cache/artifacts/engine/linux-x64/shader_lib
-    - mkdir -p /opt/flutter/bin/cache/artifacts/engine/linux-arm64
-    - cp -R flutter/bin/cache/artifacts/engine/linux-x64/shader_lib /opt/flutter/bin/cache/artifacts/engine/linux-arm64
-    - rm -rf flutter flutter_linux_${FLUTTER_VERSION}-stable.tar.xz
-    - cd ..
+    - flutter upgrade $FLUTTER_VERSION --force
   script: [flutter build linux --release]
   tags: [docker_arm64]
   only: