Log Message:
(devel/R-withr) Update 2.5.0 to 3.0.0

# withr 3.0.0

## Performance of withr

* `defer()` is now a thin wrapper around `base::on.exit()`. This is
  possible thanks to two contributions that we made to R 3.5:

  - We added an argument for FIFO cleanup: `on.exit(after = FALSE)`.
  - Calling `sys.on.exit()` elsewhere than top-level didn't work. This
    is needed for manual invokation with `deferred_run()`.

  Following this change, `defer()` is now much faster (although still
  slower than `on.exit()` which is a primitive function and about as
  fast as it gets). This also increases the compatibility of `defer()`
  with `on.exit()` (all handlers are now run in the expected order
  even if they are registered with `on.exit()`) and standalone
  versions of `defer()`.

## Breaking change

* When `source()` is used with a local environment, as opposed to
  `globalenv()` (the default), you now need to set
  `options(withr.hook_source = TRUE)` to get proper withr support
  (running `defer()` or `local_` functions at top-level of a script).
  THis support is disabled by default in local environments to avoid a
  performance penalty in normal usage of withr features.

## Other features and bugfixes

* `deferred_run()` now reports the number of executed expressions with
  a message.

* `deferred_run()` can now be run at any point in a knitr file (#235).

,* `local_tempfile()` now writes `lines` in UTF-8 (#210) and always uses
  `\n` for newlines (#216).

* `local_pdf()` and friends now correctly restore to the previously
  active device (#138).

* `local_()` now works even if withr isn't attached (#207).

* `local_par()` and `with_par()` now work if you don't set any parameters
  (#238).

* `with_language()` now properly resets the translation cache (#213).

* Fixes for Debian packaging.

# withr 2.5.2

* Fixes for CRAN checks.

# withr 2.5.1

* Fixes for CRAN checks.