Bump powermock.version from 2.0.0-RC.4 to 2.0.2

Bumps `powermock.version` from 2.0.0-RC.4 to 2.0.2.

Updates `powermock-module-junit4-common` from 2.0.0-RC.4 to 2.0.2
- [Release notes](https://github.com/powermock/powermock/releases)
- [Changelog](https://github.com/powermock/powermock/blob/release/2.x/docs/changelog.txt)
- [Commits](powermock/powermock@powermock-2.0.0-RC.4...powermock-2.0.2)

Updates `powermock-module-junit4` from 2.0.0-RC.4 to 2.0.2
- [Release notes](https://github.com/powermock/powermock/releases)
- [Changelog](https://github.com/powermock/powermock/blob/release/2.x/docs/changelog.txt)
- [Commits](powermock/powermock@powermock-2.0.0-RC.4...powermock-2.0.2)

Updates `powermock-api-mockito2` from 2.0.0-RC.4 to 2.0.2
- [Release notes](https://github.com/powermock/powermock/releases)
- [Changelog](https://github.com/powermock/powermock/blob/release/2.x/docs/changelog.txt)
- [Commits](powermock/powermock@powermock-2.0.0-RC.4...powermock-2.0.2)

Updates `powermock-core` from 2.0.0-RC.4 to 2.0.2
- [Release notes](https://github.com/powermock/powermock/releases)
- [Changelog](https://github.com/powermock/powermock/blob/release/2.x/docs/changelog.txt)
- [Commits](powermock/powermock@powermock-2.0.0-RC.4...powermock-2.0.2)

pom.xml

@@ -32,7 +32,7 @@
     <frontend-version>1.7.5</frontend-version>
     <node.version>10.13.0</node.version>
     <npm.version>6.8.0</npm.version>
-    <powermock.version>2.0.0-RC.4</powermock.version>
+    <powermock.version>2.0.2</powermock.version>
     <mockito.version>2.23.4</mockito.version>
     <guava.version>11.0.1</guava.version>
     <jacoco.version>0.8.2</jacoco.version>