Merge pull request #5066 from microsoft/hanxiao/build

Change intellij version from last snapshot to 2020.3

Author: Flanker32

PluginsAndFeatures/azure-toolkit-for-intellij/gradle.properties

@@ -1,7 +1,7 @@
 javaVersion=11
 org.gradle.jvmargs='-Duser.language=en'
 sources=false
-intellij_version=IC-LATEST-EAP-SNAPSHOT
+intellij_version=IC-2020.3
 dep_plugins=org.intellij.scala:2020.3.8
 applicationinsights.key=57cc111a-36a8-44b3-b044-25d293b8b77c
 updateVersionRange=true