Bump assertj-swing-junit from 3.8.0 to 3.9.2 (#4647)

Bumps [assertj-swing-junit](https://github.com/joel-costigliola/assertj-swing) from 3.8.0 to 3.9.2.
- [Release notes](https://github.com/joel-costigliola/assertj-swing/releases)
- [Commits](assertj/assertj-swing@assertj-swing-parent-pom-3.8.0...assertj-swing-parent-pom-3.9.2)

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

build.gradle

@@ -169,7 +169,7 @@ dependencies {
     testRuntime 'org.apache.logging.log4j:log4j-jul:2.11.2'
     testCompile 'org.mockito:mockito-core:2.24.0'
     testCompile 'com.github.tomakehurst:wiremock:2.21.0'
-    testCompile 'org.assertj:assertj-swing-junit:3.8.0'
+    testCompile 'org.assertj:assertj-swing-junit:3.9.2'
     testCompile 'org.reflections:reflections:0.9.11'
     testCompile 'org.xmlunit:xmlunit-core:2.6.2'
     testCompile 'org.xmlunit:xmlunit-matchers:2.6.2'