try: gnu toolchain for x86_64 android ndk

Author: anunaym14

.github/workflows/builds.yml

@@ -60,7 +60,7 @@ jobs:
             ndk_arch: arm-unknown-linux-musleabihf
           - os: ubuntu-latest
             target: x86_64-linux-android
-            ndk_arch: x86_64-unknown-linux-musl
+            ndk_arch: x86_64-unknown-linux-gnu
 
     name: Build (${{ matrix.target }})
     runs-on: ${{ matrix.os }}