android版本限定

GameClient/ProjectSettings/ProjectSettings.asset

@@ -172,7 +172,7 @@ PlayerSettings:
     tvOS: 0
   overrideDefaultApplicationIdentifier: 1
   AndroidBundleVersionCode: 1
-  AndroidMinSdkVersion: 21
+  AndroidMinSdkVersion: 23
   AndroidTargetSdkVersion: 0
   AndroidPreferredInstallLocation: 1
   aotOptions: