Update mockito-core from 3.5.10 to 3.5.11 #155.

Author: garydgregory

src/changes/changes.xml

@@ -62,6 +62,9 @@ The <action> type attribute can be add,update,fix,remove.
       <action issue="IO-689" dev="aherbert" type="fix" due-to="Uwe Schindler">
         FileUtils: Remove Instant->ZonedDateTime->Instant round-trip.
       </action>
+      <action dev="ggregory" type="update" due-to="Dependabot">
+        Update mockito-core from 3.5.10 to 3.5.11 #155.
+      </action>
     </release>
     <!-- The release date is the date RC is cut -->
     <release version="2.8.0" date="2020-09-05" description="Java 8 required.">