Bump hoauth2 to 1.2

Author: Sasa Bogicevic

yesod-auth-oauth2.cabal

@@ -39,7 +39,7 @@ library
  , text >= 0.7 && < 2.0
  , yesod-form >= 1.3 && < 1.5
  , transformers >= 0.2.2 && < 0.6
- , hoauth2 >= 0.4.7 && < 0.6
+ , hoauth2 >= 0.4.7 && < 1.2
  , lifted-base >= 0.2 && < 0.4
  , vector >= 0.10 && < 0.12