Greatly increase time on jungle challenge easy

Time was set to 2:55, (my) near perfect runs go at about 3:20-3:25
with the AI over 30s behind at ~4:00. Setting it to 3:50 (for now).


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@11280 178a84e3-b1eb-0310-8ba1-8eac791a3b58

data/challenges/jungle.challenge

@@ -14,6 +14,6 @@
     </medium>
     <easy>
         <karts number="4"/>
-        <requirements time="175"/>
+        <requirements time="230"/>
     </easy>
 </challenge>