graphviz.cabal revision needed for bytestring-0.11

[juhp]

See ivan-m/graphviz#53 opened at the end of 2021.

This prevents graphviz-2999.20.1.0 going into Stackage Nightly (ie building with ghc-9.2).

Thanks!

[Bodigrim]

Done in https://hackage.haskell.org/package/graphviz-2999.20.1.0/revisions/