Updated dependencies

Author: svtk

build.gradle

@@ -1,8 +1,8 @@
 plugins {
-    id 'org.jetbrains.kotlin.jvm' version '1.3.31'
+    id 'org.jetbrains.kotlin.jvm' version '1.3.60'
 }
 
-group 'coroutines'
+group 'intro-coroutines'
 version '1.0-SNAPSHOT'
 
 repositories {
@@ -13,7 +13,7 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib"
     implementation "org.jetbrains.kotlin:kotlin-reflect"
 
-    def coroutines_version = '1.2.1'
+    def coroutines_version = '1.3.3'
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutines_version"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-swing:$coroutines_version"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-jdk8:$coroutines_version"
@@ -25,7 +25,7 @@ dependencies {
     implementation "com.fasterxml.jackson.module:jackson-module-kotlin:2.9.7"
     implementation 'ch.qos.logback:logback-classic:1.0.13'
 
-    def retrofit_version = '2.6.0'
+    def retrofit_version = '2.6.3'
     implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
     implementation "com.squareup.retrofit2:converter-gson:$retrofit_version"
     implementation "com.squareup.retrofit2:retrofit-mock:$retrofit_version"