CI: Disable -fstack-protector-strong for Android builds

Author: kinke

.github/actions/3-build-cross/action.yml

@@ -97,6 +97,9 @@ runs:
         mv "android-ndk-$version" android-ndk
         rm android-ndk.zip
 
+        # remove the implicit -fstack-protector-strong
+        sed -i 's|^  " -fstack-protector-strong"$||' android-ndk/build/cmake/flags.cmake
+
         arch='${{ inputs.arch }}'
         apiLevel='${{ inputs.android_api_level }}'
         cmakeFlags="-DTARGET_SYSTEM='Android;Linux;UNIX'"