Fix scala verison gone

kappa-maintainer · kappa-maintainer · commit 3faf94a18dbe · 2026-06-16T19:25:41.000+08:00
diff --git a/build.gradle b/build.gradle
@@ -23,6 +23,10 @@ base {
     archivesName = mod_id
 }
 
+scala {
+    scalaVersion = '3.8.4'
+}
+
 java {
     toolchain {
         languageVersion = JavaLanguageVersion.of(25)
