Log Message:
Update to base-compat-batteries-0.12.1

Changes in 0.12.1 [2021.10.30]
* Backport Solo to the Data.Tuple.Compat module. If using ghc-prim-0.7.0 or
  later, Solo is taken from ghc-prim. If using an older version of
  ghc-prim, Solo is taken from the OneTuple compatibility library.
* This coincides with the base-compat-0.12.1 release. Refer to the
  base-compat changelog for more details.

Changes in 0.12.0 [2021.08.29]
* Data.Semigroup.Compat{.Repl.Batteries} no longer re-exports the Option
  data type or the option function, as both have been removed in base-4.16.
* This coincides with the base-compat-0.12.0 release. Refer to the
  base-compat changelog for more details.