Revert "Revert "Support pagination""

[andreasabel]

Reverts #521

CI reports build failures with GHC 9.0 and below:

[93 of 94] Compiling GitHub.Request   ( src/GitHub/Request.hs, /__w/github/github/dist-newstyle/build/x86_64-linux/ghc-8.2.2/github-0.29.1/noopt/build/GitHub/Request.o )

src/GitHub/Request.hs:503:36: error:
    Not in scope: ‘BS.toStrict’
    Perhaps you meant ‘LBS.toStrict’ (imported from Data.ByteString.Lazy)
    Module ‘Data.ByteString’ does not export ‘toStrict’.
    |
503 |           (\page -> ("page", Just (BS.toStrict $ toLazyByteString $ intDec page))) <$> pageParamsPage pp
    |                                    ^^^^^^^^^^^

src/GitHub/Request.hs:504:45: error:
    Not in scope: ‘BS.toStrict’
    Perhaps you meant ‘LBS.toStrict’ (imported from Data.ByteString.Lazy)
    Module ‘Data.ByteString’ does not export ‘toStrict’.
    |
504 |           , (\perPage -> ("per_page", Just (BS.toStrict $ toLazyByteString $ intDec perPage))) <$> pageParamsPerPage pp
    |                                             ^^^^^^^^^^^

Following the suggestions fixes the problem (haskell/bytestring#281).