Log Message:
hs-base-compat: update to 0.12.2.

## Changes in 0.12.2 [2022.08.11]
 - Sync with `base-4.17`/GHC 9.4
 - Backport `(.^.)`, `(.>>.)`, `(.<<.)`, `(!>>.)`, \ 
`(!<<.)`, `oneBits` to
   `Data.Bits.Compat`
 - Backport `pattern TypeRep` to `Type.Reflection.Compat`