Update dependency org.mockito:mockito-core to v5.20.0 (#169)

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

Author: renovate[bot]

lib/build.gradle

@@ -45,7 +45,7 @@ dependencies {
     implementation 'com.fasterxml.jackson.core:jackson-databind:2.20.0'
     implementation 'com.fasterxml.jackson.datatype:jackson-datatype-jdk8:2.20.0'
     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.11.4'
-    testCompile "org.mockito:mockito-core:5.19.0"
+    testCompile "org.mockito:mockito-core:5.20.0"
     testCompileOnly 'org.projectlombok:lombok:1.18.38'
     testAnnotationProcessor 'org.projectlombok:lombok:1.18.38'
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.11.4'