HIVE-28115: Upgrade mockito-core from 3.3.3 to 3.4.4 in standalone-metastore (Raghav Aggarwal reviewed by Stamatis Zampetakis)

The change simply aligns the version with the one used in the main pom.xml file.

Close #5125

Author: Aggarwal-Raghav

standalone-metastore/pom.xml

@@ -88,7 +88,7 @@
     <libfb303.version>0.9.3</libfb303.version>
     <libthrift.version>0.16.0</libthrift.version>
     <log4j2.version>2.18.0</log4j2.version>
-    <mockito-core.version>3.3.3</mockito-core.version>
+    <mockito-core.version>3.4.4</mockito-core.version>
     <orc.version>1.8.5</orc.version>
     <protobuf.version>3.24.4</protobuf.version>
     <io.grpc.version>1.51.0</io.grpc.version>