sauerbraten: SVN repository has moved

pkgs/games/sauerbraten/default.nix

···
     baseName="sauerbraten";
     version="3331";
     name="${baseName}-r${version}";
-    url="https://sauerbraten.svn.sourceforge.net/svnroot/sauerbraten";
+    url="https://svn.code.sf.net/p/sauerbraten/code";
     hash="0904hk9rz2x941c9587bfxa4rca81260j3m2hjjrp984w67x2w7y";
   };
 in