[java] SpotBugs exclude IS2_INCONSISTENT_SYNC form the SeleniumManager (#14768)

Author: mk868

Diff for: java/spotbugs-excludes.xml

@@ -242,7 +242,7 @@
 
   <Match>
     <Class name="org.openqa.selenium.manager.SeleniumManager"/>
-    <Bug pattern="NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE"/>
+    <Bug pattern="NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE,IS2_INCONSISTENT_SYNC"/>
   </Match>
 
 </FindBugsFilter>