feat: update java21

build.gradle

@@ -3,8 +3,8 @@ plugins {
 	id 'maven-publish'
 }
 
-sourceCompatibility = JavaVersion.VERSION_17
-targetCompatibility = JavaVersion.VERSION_17
+sourceCompatibility = JavaVersion.VERSION_21
+targetCompatibility = JavaVersion.VERSION_21
 
 archivesBaseName = project.archives_base_name
 version = project.mod_version
@@ -45,6 +45,7 @@ dependencies {
 
 	// carpet
 	modImplementation "carpet:fabric-carpet:${project.carpet_core_version}"
+	// modImplementation(files("./lib/fabric-carpet-1.20-1.4.112+v230608.jar"))
 
 	// Fabric Permission API
 	include(modImplementation('me.lucko:fabric-permissions-api:0.2-SNAPSHOT'))
@@ -67,8 +68,8 @@ processResources {
 }
 
 tasks.withType(JavaCompile).configureEach {
-	// Minecraft 1.18 (1.18-pre2) upwards uses Java 17.
-	it.options.release = 17
+	// Minecraft 1.21 and upwards uses Java 21.
+	it.options.release = 21
 }
 
 java {