Bump optparse-applicative upper bound to 0.16

Author: ericdwhite

stylish-haskell.cabal

@@ -70,7 +70,7 @@ Executable stylish-haskell
   Build-depends:
     stylish-haskell,
     strict               >= 0.3  && < 0.4,
-    optparse-applicative >= 0.12 && < 0.15,
+    optparse-applicative >= 0.12 && < 0.16,
     -- Copied from regular dependencies...
     aeson            >= 0.6    && < 1.5,
     base             >= 4.8    && < 5,