Bump to 2021.1

Bumping platformVersion as well, as I understand this should build the plugin with 2021.1.

Author: eirikb

gradle.properties

@@ -5,13 +5,13 @@ pluginGroup = no.eirikb.avatest
 pluginName = AvaJavaScriptTestRunnerRunConfigurationGenerator
 pluginVersion = 1.3.4
 pluginSinceBuild = 202
-pluginUntilBuild = 203.*
+pluginUntilBuild = 211.*
 # Plugin Verifier integration -> https://github.com/JetBrains/gradle-intellij-plugin#plugin-verifier-dsl
 # See https://jb.gg/intellij-platform-builds-list for available build versions
 pluginVerifierIdeVersions = 2020.2.4, 2020.3.2, 2021.1
 
 platformType = IU
-platformVersion = 2020.2.4
+platformVersion = 2021.1
 platformDownloadSources = true
 # Plugin Dependencies -> https://plugins.jetbrains.com/docs/intellij/plugin-dependencies.html
 # Example: platformPlugins = com.intellij.java, com.jetbrains.php:203.4449.22