Revert settings.gradle.kts plugin version, add versions to plugin blocks directly

Co-authored-by: trask <218610+trask@users.noreply.github.com>

Author: Copilot

build.gradle.kts

@@ -1,7 +1,7 @@
 plugins {
   id("idea")
 
-  id("com.github.ben-manes.versions")
+  id("com.github.ben-manes.versions") version "0.51.0"
   id("ai.spotless-conventions")
 }
 

dependencyManagement/build.gradle.kts

@@ -3,7 +3,7 @@ import com.github.benmanes.gradle.versions.updates.DependencyUpdatesTask
 plugins {
   `java-platform`
 
-  id("com.github.ben-manes.versions")
+  id("com.github.ben-manes.versions") version "0.51.0"
 }
 
 data class DependencySet(val group: String, val version: String, val modules: List<String>)

settings.gradle.kts

@@ -2,7 +2,6 @@ import org.apache.tools.ant.taskdefs.condition.Os
 
 pluginManagement {
   plugins {
-    id("com.github.ben-manes.versions") version "0.51.0"
     id("com.github.jk1.dependency-license-report") version "2.9"
     id("me.champeau.jmh") version "0.7.3"
     id("com.gradle.plugin-publish") version "1.3.1"