Bump upper bounds for criterion and contravariant (#502)

Author: Gabriella439

dhall.cabal

@@ -173,7 +173,7 @@ Library
         bytestring                                 < 0.11,
         case-insensitive                           < 1.3 ,
         containers                  >= 0.5.0.0  && < 0.6 ,
-        contravariant                              < 1.5 ,
+        contravariant                              < 1.6 ,
         cryptonite                  >= 0.23     && < 1.0 ,
         Diff                        >= 0.2      && < 0.4 ,
         directory                   >= 1.3      && < 1.4 ,
@@ -287,7 +287,7 @@ Benchmark dhall-parser
     Build-Depends:
         base                      >= 4        && < 5  ,
         containers                >= 0.5.0.0  && < 0.6,
-        criterion                 >= 1.1      && < 1.5,
+        criterion                 >= 1.1      && < 1.6,
         dhall                                         ,
         directory                 >= 1.3      && < 1.4,
         text                      >= 0.11.1.0 && < 1.3
@@ -299,6 +299,6 @@ Benchmark deep-nested-large-record
     Build-Depends:
         base                      >= 4        && < 5  ,
         containers                >= 0.5.0.0  && < 0.6,
-        criterion                 >= 1.1      && < 1.5,
+        criterion                 >= 1.1      && < 1.6,
         dhall
     Default-Language: Haskell2010