Setting JvmTarget to 21 for quartz to fix build/push issue due to mixed Java versions when using Java 23 locally

quartz/build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     alias(libs.plugins.kotlinMultiplatform)
     alias(libs.plugins.androidLibrary)
@@ -43,13 +45,20 @@ kotlin {
     compilerOptions {
         freeCompilerArgs.add("-Xstring-concat=inline")
     }
-    jvm()
+    jvm {
+        compilerOptions {
+            jvmTarget.set(JvmTarget.JVM_21)
+        }
+    }
 
     // Target declarations - add or remove as needed below. These define
     // which platforms this KMP module supports.
     // See: https://kotlinlang.org/docs/multiplatform-discover-project.html#targets
     androidTarget {
         publishLibraryVariants("release")
+        compilerOptions {
+            jvmTarget.set(JvmTarget.JVM_21)
+        }
     }
 
     // For iOS targets, this is also where you should