Moved from JCenter to Maven Central.

Updated dependencies.

examples/build.gradle.kts

@@ -1,6 +1,6 @@
 plugins {
-    id("org.jetbrains.kotlin.jvm") version "1.4.0"
-    id("com.github.ben-manes.versions") version "0.28.0"
+    id("org.jetbrains.kotlin.jvm") version "1.4.31"
+    id("com.github.ben-manes.versions") version "0.38.0"
     application
 }
 
@@ -10,13 +10,12 @@ plugins {
 
 repositories {
     mavenLocal()
-    jcenter()
     mavenCentral()
 }
 
 dependencies {
     implementation("net.thauvin.erik:bitly-shorten:0.9.3")
-    implementation("org.json:json:20200518")
+    implementation("org.json:json:20210307")
 }
 
 application {

examples/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists