Bump powermock-core from 2.0.2 to 2.0.4 (#4695)

Bumps [powermock-core](https://github.com/powermock/powermock) from 2.0.2 to 2.0.4.
- [Release notes](https://github.com/powermock/powermock/releases)
- [Changelog](https://github.com/powermock/powermock/blob/release/2.x/docs/changelog.txt)
- [Commits](https://github.com/powermock/powermock/compare/powermock-2.0.2...powermock-2.0.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

build.gradle

@@ -322,7 +322,7 @@ dependencies {
     testImplementation 'junit:junit:4.12'
     testImplementation 'org.mockito:mockito-core:3.1.0'
     testImplementation 'androidx.test:core:1.2.0'
-    testImplementation 'org.powermock:powermock-core:2.0.2'
+    testImplementation 'org.powermock:powermock-core:2.0.4'
     testImplementation 'org.powermock:powermock-module-junit4:2.0.4'
     testImplementation 'org.powermock:powermock-api-mockito2:2.0.4'
     testImplementation 'org.json:json:20190722'