bump version 2.1.15

Author: Daisy-pliu

buildSrc/src/main/java/Dependencies.kt

@@ -4,7 +4,7 @@ object Versions {
     const val compile_sdk = 28
     const val build_tools = "28.0.3"
     const val version_code = 1
-    const val version_name = "2.1.14"
+    const val version_name = "2.1.15"
     const val android_gradle_plugin = "3.6.1"
     const val gms_oss_licenses_plugin = "0.10.2"
     const val support = "1.0.0"