Update dependency org.junit.jupiter:junit-jupiter-engine to v5.9.0 (#415

)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

gradle.properties

@@ -13,7 +13,7 @@ spockVersion=2.0-groovy-3.0
 kotlinVersion=1.6.10
 ktorVersion=1.6.8
 dokka_version=1.6.10
-junitVersion=5.8.2
+junitVersion=5.9.0
 
 title=Micronaut Kotlin Integrations
 projectDesc=Includes extensions to Micronaut for Kotlin