Bump junit-platform-launcher from 1.3.2 to 1.4.0 (#4636)

Bumps [junit-platform-launcher](https://github.com/junit-team/junit5) from 1.3.2 to 1.4.0.
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](https://github.com/junit-team/junit5/commits)

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

build.gradle

@@ -165,7 +165,7 @@ dependencies {
     testCompile 'org.junit.jupiter:junit-jupiter-params:5.3.2'
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.4.0'
     testRuntimeOnly 'org.junit.vintage:junit-vintage-engine:5.3.2'
-    testCompile 'org.junit.platform:junit-platform-launcher:1.3.2'
+    testCompile 'org.junit.platform:junit-platform-launcher:1.4.0'
 
     testCompile 'org.junit-pioneer:junit-pioneer:0.3.0'
     testRuntime 'org.apache.logging.log4j:log4j-core:2.11.1'