Bump network

Author: mightybyte

io-streams-haproxy.cabal

@@ -39,7 +39,7 @@ library
                      attoparsec        >= 0.7 && < 0.14,
                      bytestring        >= 0.9 && < 0.11,
                      io-streams        >= 1.3 && < 1.6,
-                     network           >= 2.3 && < 3.1,
+                     network           >= 2.3 && < 3.2,
                      transformers      >= 0.3 && < 0.6
   default-language:  Haskell2010