Pin JDK release for AbstractCompile

Author: Goooler

build.gradle.kts

@@ -15,11 +15,6 @@ version = providers.gradleProperty("VERSION_NAME").get()
 group = providers.gradleProperty("GROUP").get()
 description = providers.gradleProperty("POM_DESCRIPTION").get()
 
-java {
-  sourceCompatibility = JavaVersion.VERSION_1_8
-  targetCompatibility = JavaVersion.VERSION_1_8
-}
-
 gradlePlugin {
   website = providers.gradleProperty("POM_URL")
   vcsUrl = providers.gradleProperty("POM_URL")
@@ -93,6 +88,14 @@ dependencies {
   testImplementation("org.junit.platform:junit-platform-suite-engine")
 }
 
+tasks.withType<GroovyCompile>().configureEach {
+  options.release = 8
+}
+
+tasks.withType<JavaCompile>().configureEach {
+  options.release = 8
+}
+
 tasks.withType<Test>().configureEach {
   useJUnitPlatform()