Update Platform Version of JetBrains Gateway Plugin to 223.6646.21-CUSTOM-SNAPSHOT

Author: roboquat

components/ide/jetbrains/gateway-plugin/gradle-latest.properties

@@ -6,5 +6,5 @@ pluginUntilBuild=223.*
 # See https://jb.gg/intellij-platform-builds-list for available build versions.
 pluginVerifierIdeVersions=2022.3
 # Version from "com.jetbrains.gateway" which can be found at https://www.jetbrains.com/intellij-repository/snapshots
-platformVersion=223.4884.79-CUSTOM-SNAPSHOT
+platformVersion=223.6646.21-CUSTOM-SNAPSHOT