Log Message:
devel/hs-unix-compat: update to unix-compat-0.7.3

## Version 0.7.3 (2024-10-11)

- Fix `sysmacros.h` include for GNU/Hurd
  ([PR #12](https://github.com/haskell-pkg-janitors/unix-compat/pull/12)).
- Tested with GHC 8.0 - 9.10.

## Version 0.7.2 (2024-06-25)

- Remove flag `old-time` and drop support for `old-time`.
- Remove support for GHC 7.
- Tested with GHC 8.0 - 9.10.