bump timings in this test again

Author: brianmario

spec/mysql2/client_spec.rb

@@ -260,7 +260,7 @@ def connect *args
           (mark[:USR1] - mark[:START]).should < 1.2
           (mark[:END] - mark[:USR1]).should > 0.9
           (mark[:END] - mark[:START]).should >= 2
-          (mark[:END] - mark[:START]).should < 2.1
+          (mark[:END] - mark[:START]).should < 2.2
           Process.kill(:TERM, pid)
           Process.waitpid2(pid)
         ensure