Incorrect `base` bounds on Hackage for `0.6.0`

[parsonsmatt]

When building contiguous as part of CI for bytesmith, i got this error on GHC 8.8:

Building library for contiguous-0.6.0..

src/Data/Primitive/Contiguous/Class.hs:11:14: error:
    Unsupported extension: UnliftedNewtypes
    Perhaps you meant ‘UnliftedFFITypes’
   |
11 | {-# LANGUAGE UnliftedNewtypes #-}
   |              ^^^^^^^^^^^^^^^^
cabal-3.6.2.0: Failed to build contiguous-0.6.0. See the build log above for details.

This needs base >= 4.14 to avoid the problem

[andrewthad]

Thanks. I've revised this bound on hackage.