Log Message:
(.devel/R-callr) Updated 3.7.3 to 3.7.5

# callr 3.7.5

* No changes.

# callr 3.7.4

* The `r_session$get_running_time()` method now returns the correct
  values, as documented (#241, @djnavarro).

* callr now uses fully qualified function calls in the subprocess to
  avoid interference with functions defined in the global environment.
  I.e. `base::stderr()` instead of `stderr()`. Closes #246.