Replace jcenter with mavenCentral
Replace jcenter with mavenCentral

Since jcenter is officially EOL, and using it results in compile time warning, it is recommended (https://developer.android.com/studio/build/jcenter-migration) to switch to mavenCentral.
mogol/flutter_secure_storage,mogol/flutter_secure_storage,mogol/flutter_secure_storage,mogol/flutter_secure_storage,mogol/flutter_secure_storage,mogol/flutter_secure_storage,mogol/flutter_secure_storage