modernize gradle scripts

plugins/sdk/build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 plugins {
     alias(libs.plugins.android.library)
     alias(libs.plugins.kotlin.android)
@@ -39,8 +41,10 @@ android {
         targetCompatibility = JavaVersion.VERSION_1_8
     }
 
-    kotlinOptions {
-        jvmTarget = "1.8"
+    kotlin {
+        compilerOptions {
+            jvmTarget.set(JvmTarget.JVM_1_8)
+        }
     }
     namespace = "de.mm20.launcher2.sdk"
     
@@ -111,7 +115,7 @@ publishing {
         if (ghUser == "MM2-0") {
             maven {
                 name = "GitHubPackages"
-                url = uri("https://maven.pkg.github.com/MM2-0/Kvaesitso")
+                url = uri("https.maven.pkg.github.com/MM2-0/Kvaesitso")
                 credentials {
                     username =
                         project.findProperty("gpr.user") as String? ?: System.getenv("USERNAME")