Update Gradle and Kotlin

dependencies.gradle

@@ -7,7 +7,7 @@ ext.versions = [
     publishVersionCode  : 228,
 
     // Plugins
-    gradlePlugin        : '3.3.0',
+    gradlePlugin        : '3.3.1',
     spotlessPlugin      : '3.17.0',
     versionPlugin       : '0.20.0',
     bintrayPlugin       : '0.9',
@@ -19,7 +19,7 @@ ext.versions = [
     androidxMaterial    : '1.0.0',
 
     // Kotlin
-    kotlin              : '1.3.20',
+    kotlin              : '1.3.21',
     coroutines          : '1.1.1',
 
     // afollestad

gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.2-all.zip