[java] Adding spotbugs exception for HttpClientTestBase

Author: diemol

java/spotbugs-excludes.xml

@@ -151,7 +151,7 @@
 
   <Match>
     <Class name="~org.openqa.selenium.remote.internal.HttpClientTestBase.*"/>
-    <Bug pattern="XSS_REQUEST_PARAMETER_TO_SERVLET_WRITER"/>
+    <Bug pattern="ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD"/>
   </Match>
 
   <Match>