Log Message:
R-withr: update to 2.4.3 (and un-break bulk builds)

# withr 2.4.3

* Lionel Henry is the new maintainer.

* Handlers registered with the global environment (as happens when `local_()`
  is run at the top-level, outside a function) are now automatically run
  when the R session ends (#173).

* New `with_language()` and `local_language()` to temporarily control the
  language used for translations (#180).

* `with_seed()` now caches the check for R version, so is now faster (#170)

* `with_makevars()` and `local_makevars()` now eagerly evaluate the `path` \ 
argument (#169)