Bump assertj-core from 3.18.0 to 3.18.1 in /modules/junit-jupiter

Bumps [assertj-core](https://github.com/assertj/assertj-core) from 3.18.0 to 3.18.1.
- [Release notes](https://github.com/assertj/assertj-core/releases)
- [Commits](assertj/assertj@assertj-core-3.18.0...assertj-core-3.18.1)

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

modules/junit-jupiter/build.gradle

@@ -12,7 +12,7 @@ dependencies {
     testCompile ('org.mockito:mockito-core:3.5.15') {
         exclude(module: 'hamcrest-core')
     }
-    testCompile 'org.assertj:assertj-core:3.18.0'
+    testCompile 'org.assertj:assertj-core:3.18.1'
     testCompile 'org.junit.jupiter:junit-jupiter-params:5.7.0'
 
     testRuntime 'org.postgresql:postgresql:42.2.18'