Merge pull request #20585 from dreis2211

* gh-20585:
  Upgrade to Gradle 6.3 RC4

Closes gh-20585

Author: wilkinsona

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-rc-3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-rc-4-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists