Clean up plugin repos setup

Author: ZacSweers

build.gradle.kts

@@ -35,10 +35,6 @@ version = providers.gradleProperty("ktfmt.version").get()
 
 tasks.wrapper { distributionType = Wrapper.DistributionType.ALL }
 
-repositories {
-  mavenCentral()
-}
-
 val ktfmtCliDependencies = configurations.dependencyScope("ktfmtCliDependencies")
 val ktfmtCliClasspath =
     configurations.resolvable("ktfmtCliClasspath") {

settings.gradle.kts

@@ -14,6 +14,13 @@
  * limitations under the License.
  */
 
+pluginManagement {
+  repositories {
+    mavenCentral()
+    gradlePluginPortal()
+  }
+}
+
 rootProject.name = "ktfmt-parent"
 
 include(
@@ -35,4 +42,7 @@ dependencyResolutionManagement {
       version("ktfmt", ktfmtVersion)
     }
   }
+  repositories {
+    mavenCentral()
+  }
 }