Update dependency org.mockito:mockito-junit-jupiter to v5.21.0 (#200)

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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -11,7 +11,7 @@ jakarta-annotation-api = "2.1.1"
 javapoet = "1.13.0"
 jupiter = "6.0.1"
 mapstruct = "1.4.0.Final"
-mockito = "5.20.0"
+mockito = "5.21.0"
 spring = "6.0.0"
 springBoot = "3.5.8"
 springDependencyManagement = "1.1.7"