chore: update dependency org.mockito:mockito-junit-jupiter to v5.20.0 (#128)

Author: renovate[bot]

gradle/libs.versions.toml

@@ -9,7 +9,7 @@ checkstyleTools = "11.1.0"
 
 # testing
 junit = "6.0.0"
-mockito = "5.19.0"
+mockito = "5.20.0"
 testcontainers = "1.21.3"
 
 # compile time processing