Bump org.mockito:mockito-core from 5.20.0 to 5.21.0 (#170)

Author: dependabot[bot]

pom.xml

@@ -117,7 +117,7 @@
     <dependency>
       <groupId>org.mockito</groupId>
       <artifactId>mockito-core</artifactId>
-      <version>5.20.0</version>
+      <version>5.21.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>