Missing ghc library releases on Hackage

See https://hackage.haskell.org/package/ghc.

The following recent versions are missing as of 2021-09-27:

• 8.8.2
• 8.8.4
• 8.10.3
• 8.10.4
• 8.10.5
• 8.10.6
• 8.10.7
• 9.0.1