Allow attoparsec 0.14

Builds fine and all tests pass.

Author: felixonmars

email-validate.cabal

@@ -24,7 +24,7 @@ source-repository this
 library
     build-depends:
         base >= 4.4 && < 5,
-        attoparsec >= 0.10.0 && < 0.14,
+        attoparsec >= 0.10.0 && < 0.15,
         bytestring >= 0.9 && < 0.11,
         template-haskell >= 2.10.0.0 && < 2.17
     default-language: Haskell2010