Self Update Check
Checks whether the currently used Gradle IntelliJ Plugin is outdated and if a new release is available. The plugin performs an update check on every run asking the GitHub Releases page for the redirection URL to the latest version with HEAD HTTP request: https://github.com/JetBrains/intellij-platform-gradle-plugin/releases/latest.
If the current version is outdated, the plugin will emit a warning with its current and the latest version.
Feature respects the Gradle --offline mode.