fix some Mac audio play and upgrade gradle versions

What's Changed

• MOD： 升级gradle版本 更新支持最新的airserver-java 尝试修复下音频功能 by @Dragonwarri0r in #1

New Contributors

• @Dragonwarri0r made their first contribution in #1

Full Changelog: https://github.com/Dragonwarri0r/androidAirplayServer/commits/audio_fix