Set duplicatesStrategy to EXCLUDE for resource processing tasks (#2)

* Set `duplicatesStrategy` to `EXCLUDE` for resource processing tasks

Fixes "Entry courses/Introduction to Python.zip is a duplicate but no duplicate handling strategy has been set" error

* Downgrade IntelliJ Platform Plugin to version 2.5.0 for compatibility

Author: ARostovsky

buildSrc/src/main/kotlin/intellij-plugin-common-conventions.gradle.kts

@@ -70,6 +70,14 @@ tasks {
     inputs.property("environmentName", providers.gradleProperty("environmentName"))
   }
 
+  processResources {
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+  }
+
+  processTestResources {
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+  }
+
   register(VERIFY_CLASSES_TASK_NAME) {
     dependsOn(jar)
     // `verifyClasses` relies on resources from the current and `intellij-plugin` modules.

gradle/libs.versions.toml

@@ -28,7 +28,7 @@ mockwebserver = { group = "com.squareup.okhttp3", name = "mockwebserver", versio
 openTest4J = { group = "org.opentest4j", name = "opentest4j", version = "1.3.0" }
 
 [plugins]
-intelliJPlatformPlugin = { id = "org.jetbrains.intellij.platform", version = "2.10.2" }
+intelliJPlatformPlugin = { id = "org.jetbrains.intellij.platform", version = "2.5.0" }
 kotlinPlugin = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }
 kotlinSerializationPlugin = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
 propertiesPlugin = { id = "net.saliman.properties", version = "1.5.2" }