Log Message:
hs-base-orphans: update to 0.8.7.

## Changes in 0.8.7 [2022.08.11]
 - Backport new instances from GHC 9.2.2/`base-4.16.1.0`:
   * `Ix` instances for various integral types in `Foreign.C.Types`,
     `Foreign.Ptr`, and `System.Posix.Types`. For a complete list of such types,
     see https://gitlab.haskell.org/ghc/ghc/-/merge_requests/7385.
 - Backport a bugfix for the `Ord1 Down` instance from GHC 9.4/`base-4.17` such
   that it now uses reverse sort order.