Merge pull request #43 from r-ralph/kotlin_1.3.31

Update Kotlin to 1.3.31

Author: r-ralph

buildSrc/src/main/kotlin/Dependencies.kt

@@ -1,6 +1,6 @@
 object Versions {
     // Language
-    const val kotlinVersion = "1.3.21"
+    const val kotlinVersion = "1.3.31"
 
     // Plugin
     const val androidPluginVersion = "3.3.2"