Update gradle plugin version to 4.2.1 to be compatible with Java 11.

Author: ggfan

DynamicCodeLoadingKotlin/build.gradle

@@ -1,18 +1,18 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.3.30'
+    ext.kotlin_version = '1.4.32'
     repositories {
         maven {
             url "http://storage.googleapis.com/r8-releases/raw/master"
         }
         google()
-        jcenter()
+        mavenCentral()
 
     }
     dependencies {
-        classpath 'com.android.tools:r8:878ec25559ca91497517345ec3a6c16102b7025c'  // Must be before the Gradle Plugin for Android.
-        classpath 'com.android.tools.build:gradle:3.4.0'
+        classpath 'com.android.tools:r8:2.2.64'  // Must be before the Gradle Plugin for Android.
+        classpath 'com.android.tools.build:gradle:4.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -22,8 +22,7 @@ buildscript {
 allprojects {
     repositories {
         google()
-        jcenter()
-        
+        mavenCentral()
     }
 }
 

DynamicCodeLoadingKotlin/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.4-rc-1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-all.zip