Ignore rmtree errors for serverless environments

[eighteyes]

Using Contextily in a managed serverless environment removes the tmp directory before atexit fires, which results in the following error. Which, I wager means it can't find the indicated directory to delete.

Traceback (most recent call last):
  File "/layers/google.python.pip/pip/lib/python3.11/site-packages/contextily/tile.py", line 61, in _clear_cache
    shutil.rmtree(tmpdir)
  File "/layers/google.python.runtime/python/lib/python3.11/shutil.py", line 742, in rmtree
    onerror(os.lstat, path, sys.exc_info())
  File "/layers/google.python.runtime/python/lib/python3.11/shutil.py", line 740, in rmtree
    orig_st = os.lstat(path, dir_fd=dir_fd) 

I can put our invocation behind a try-catch, or otherwise ignore this error, but an upstream patch would be preferable.

Thanks!

[martinfleis]

Thanks! Will cut a minor patch release so it does not block you.