Update the org.jetbrains.kotlin.jvm version to 2.1.0, from 2.0.0 (#7870)

https://plugins.gradle.org/plugin/org.jetbrains.kotlin.jvm/2.1.0

Additionally, a TODO was added for `org.jetbrains.intellij.platform` and
version `2023.3` of the platform

Author: jwren

build.gradle.kts

@@ -31,8 +31,10 @@ repositories {
 plugins {
   // https://plugins.jetbrains.com/docs/intellij/tools-intellij-platform-gradle-plugin.html
   // https://github.com/JetBrains/intellij-platform-gradle-plugin/releases
+  // https://plugins.gradle.org/plugin/org.jetbrains.kotlin.jvm
+  // TODO(jwren) "2.2.0" can't be used to build 2023.3, as soon as we don't support this version, update the version here and elsewhere:
   id("org.jetbrains.intellij.platform") version "2.1.0"
-  id("org.jetbrains.kotlin.jvm") version "2.0.0"
+  id("org.jetbrains.kotlin.jvm") version "2.1.0"
 }
 
 val flutterPluginVersion = providers.gradleProperty("flutterPluginVersion").get()

flutter-idea/build.gradle.kts

@@ -21,9 +21,10 @@ repositories {
 plugins {
   // https://plugins.jetbrains.com/docs/intellij/tools-intellij-platform-gradle-plugin.html
   // https://github.com/JetBrains/intellij-platform-gradle-plugin/releases
+  // https://plugins.gradle.org/plugin/org.jetbrains.kotlin.jvm
   id("java")
   id("org.jetbrains.intellij.platform") version "2.1.0"
-  id("org.jetbrains.kotlin.jvm") version "2.0.0"
+  id("org.jetbrains.kotlin.jvm") version "2.1.0"
 }
 
 val flutterPluginVersion = providers.gradleProperty("flutterPluginVersion").get()

flutter-studio/build.gradle.kts

@@ -22,9 +22,10 @@ repositories {
 plugins {
   // https://plugins.jetbrains.com/docs/intellij/tools-intellij-platform-gradle-plugin.html
   // https://github.com/JetBrains/intellij-platform-gradle-plugin/releases
+  // https://plugins.gradle.org/plugin/org.jetbrains.kotlin.jvm
   id("java")
   id("org.jetbrains.intellij.platform.module")
-  id("org.jetbrains.kotlin.jvm") version "2.0.0"
+  id("org.jetbrains.kotlin.jvm") version "2.1.0"
 }
 
 val flutterPluginVersion = providers.gradleProperty("flutterPluginVersion").get()