Update dependencies to fix build

It seems that the version of purescript-monoid that gets included currently (albeit indirectly) is broken, and I get:
```
[error] purescript-monoid/src/Data/Monoid.purs:21: Error in declaration monoidMaybe
[error] No instance found for Prelude.Semigroup (Data.Maybe.Maybe a2878)
[error] instance monoidMaybe :: (Semigroup a) => Monoid (Maybe a) where
[error] ^
```
Updating to the latest versions of the dependencies seems to get it to compile (though I'm not sure if it breaks something else).