Update dependency gradle.plugin.org.jetbrains.gradle.plugin.idea-ext:gradle-idea-ext to v1.2 (main) (#274)

Fixes IDEA imports on Gradle 9.

Co-authored-by: neoforged-renovate[bot] <174042230+neoforged-renovate[bot]@users.noreply.github.com>

Author: neoforged-renovate[bot]

build.gradle

@@ -113,7 +113,7 @@ dependencies {
     compileOnly "com.intellij:annotations:9.0.4"
     testCompileOnly "com.intellij:annotations:9.0.4"
     shaded "com.google.code.gson:gson:2.11.0"
-    implementation "gradle.plugin.org.jetbrains.gradle.plugin.idea-ext:gradle-idea-ext:1.1.9"
+    implementation "gradle.plugin.org.jetbrains.gradle.plugin.idea-ext:gradle-idea-ext:1.2"
     shaded "net.neoforged:EclipseLaunchConfigs:0.1.11"
     shaded "net.neoforged:VscLaunchConfigs:1.0.8"
     shaded("net.neoforged:JarJarMetadata:0.4.2") {