Fix for when googlePlayServicesVersion is '+'
Fix for when googlePlayServicesVersion is '+'

The app build will fail when using googlePlayServicesVersion, if it's set to '+' despite version being >15.0.0
EddyVerbruggen/nativescript-plugin-firebase,EddyVerbruggen/nativescript-plugin-firebase,EddyVerbruggen/nativescript-plugin-firebase,EddyVerbruggen/nativescript-plugin-firebase,EddyVerbruggen/nativescript-plugin-firebase,EddyVerbruggen/nativescript-plugin-firebase