fix: set jvm bytecode target to 21 for core and base modules

Signed-off-by: Dario Valdespino <[email protected]>

Author: darvld

packages/base/build.gradle.kts

@@ -11,6 +11,7 @@
  * License for the specific language governing permissions and limitations under the License.
  */
 
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 import elide.internal.conventions.kotlin.*
 
 plugins {
@@ -34,6 +35,10 @@ elide {
     explicitApi = true
   }
 
+  jvm {
+    target = JvmTarget.JVM_21
+  }
+
   checks {
     detekt = true
   }

packages/core/build.gradle.kts

@@ -11,6 +11,7 @@
  * License for the specific language governing permissions and limitations under the License.
  */
 
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 import elide.internal.conventions.kotlin.*
 
 plugins {
@@ -32,6 +33,10 @@ elide {
     target = KotlinTarget.Default
     explicitApi = true
   }
+
+  jvm {
+    target = JvmTarget.JVM_21
+  }
 }
 
 dependencies {