Removed deprecated JCenter() call in settings.gradle

settings.gradle

@@ -1,10 +1,10 @@
 pluginManagement {
     repositories {
-        jcenter()
         maven {
             name = 'Fabric'
             url = 'https://maven.fabricmc.net/'
         }
+        mavenCentral()
         gradlePluginPortal()
     }
-}
+}