feat: support JVM 8+ and compile with Java 21 & use Parsek core 1.0.0-beta.3

Author: duruer

.github/workflows/release.yml

@@ -60,7 +60,7 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: temurin
-          java-version: 8
+          java-version: 21
 
       - name: Build with Gradle
         uses: gradle/actions/setup-gradle@v3

build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     kotlin("jvm") version "1.9.20"
     kotlin("kapt") version "1.9.20"
@@ -26,7 +28,7 @@ dependencies {
     if (bootstrap) {
         compileOnly(project(mapOf("path" to ":Parsek")))
     } else {
-        compileOnly("com.github.StatuParsek:Parsek:2.1.0")
+        compileOnly("com.github.StatuParsek:Parsek:v1.0.0-beta.3")
     }
 
     compileOnly(kotlin("stdlib-jdk8"))
@@ -122,4 +124,29 @@ publishing {
             }
         }
     }
+}
+
+java {
+    withJavadocJar()
+    withSourcesJar()
+
+    // Use Java 21 for compilation
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(21))
+    }
+}
+
+kotlin {
+    jvmToolchain(21) // Ensure Kotlin uses the Java 21 toolchain
+}
+
+tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {
+    compilerOptions {
+        jvmTarget.set(JvmTarget.JVM_1_8)
+    }
+}
+
+tasks.withType<JavaCompile> {
+    sourceCompatibility = "1.8"
+    targetCompatibility = "1.8"
 }