fix plugin id

GradleUp/shadow#908

Author: emilburzo

build.gradle.kts

@@ -3,7 +3,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 plugins {
     kotlin("jvm") version "1.4.10"
     application
-    id("com.github.johnrengelman.shadow") version "6.1.0"
+    id("com.gradleup.shadow") version "6.1.0"
 }
 
 group = "com.emilburzo.nest"
@@ -41,7 +41,7 @@ java {
 }
 
 tasks {
-    named<com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar>("shadowJar") {
+    named<com.gradleup.shadow.tasks.ShadowJar>("shadowJar") {
         archiveBaseName.set("nest-rest")
         mergeServiceFiles()
         manifest {