fix(deps): update dependency org.mockito:mockito-core to v4.8.1

Author: renovate[bot]

pom.xml

@@ -62,7 +62,7 @@
         <spring.version>4.3.30.RELEASE</spring.version>
         <logbackVersion>1.4.4</logbackVersion>
         <slf4jVersion>1.7.36</slf4jVersion>
-        <mockito.version>4.8.0</mockito.version>
+        <mockito.version>4.8.1</mockito.version>
         <portlet.mvc.util.version>1.1.3</portlet.mvc.util.version>
         <uportal-libs.version>5.12.0</uportal-libs.version>
     </properties>