GHC-8.8.1 contains bytestring-0.10.9.0, but bytestring-0.10.10.0 was published on Hackage.
$ ghc-pkg list
/opt/ghc/8.8.1/lib/ghc-8.8.1/package.conf.d
...
bytestring-0.10.9.0
...
Hackage doesn't contain v0.10.9.0, but v0.10.10.0.
At this point, I think it makes sense to simply publish v0.10.9.0 to Hackage, too.