test(deps): update dependency org.mockito:mockito-core to v4.8.1 (#1023)

Author: renovate-bot

pom.xml

@@ -52,7 +52,7 @@
     <junit.version>4.13.2</junit.version>
     <findbugs.version>3.0.2</findbugs.version>
     <truth.version>1.1.3</truth.version>
-    <mockito.version>4.8.0</mockito.version>
+    <mockito.version>4.8.1</mockito.version>
     <hamcrest.version>2.2</hamcrest.version>
     <opencensus.version>0.31.1</opencensus.version>
   </properties>