Use BytesIO wrapped font instead of passing path to avoid "Cannot open resource" error in Windows

[jaimergp]

Description

CI erroring out in Azure at conda-forge/constructor-feedstock#78. Not sure why we didn't see this on GHA, but I can reproduce locally and this is the recommended fix in the Pillow docstring.

This is the error:

Traceback (most recent call last):
  File "C:\Users\username\Documents\GitHub\conda\devenv\Windows\envs\devenv-3.11\envs\const>
    sys.exit(main())
             ^^^^^^
  File "C:\Users\username\Documents\GitHub\conda\devenv\Windows\envs\devenv-3.11\envs\constn
    main_build(dir_path, output_dir=out_dir, platform=args.platform,
  File "C:\Users\username\Documents\GitHub\conda\devenv\Windows\envs\devenv-3.11\envs\constd
    create(info, verbose=verbose)
  File "C:\Users\username\Documents\GitHub\conda\devenv\Windows\envs\devenv-3.11\envs\conste
    write_images(info, tmp_dir)
  File "C:\Users\username\Documents\GitHub\conda\devenv\Windows\envs\devenv-3.11\envs\consts
    im = function(info)
         ^^^^^^^^^^^^^^
  File "C:\Users\username\Documents\GitHub\conda\devenv\Windows\envs\devenv-3.11\envs\conste
    font = ImageFont.truetype(ttf_path, 20)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\username\Documents\GitHub\conda\devenv\Windows\envs\devenv-3.11\envs\conste
    return freetype(font)
           ^^^^^^^^^^^^^^
  File "C:\Users\username\Documents\GitHub\conda\devenv\Windows\envs\devenv-3.11\envs\conste
    return FreeTypeFont(font, size, index, encoding, layout_engine)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\username\Documents\GitHub\conda\devenv\Windows\envs\devenv-3.11\envs\const_
    self.font = core.getfont(
                ^^^^^^^^^^^^^
OSError: cannot open resource

Checklist - did you ...

• Add a file to the news directory (using the template) for the next release's release notes?
• Add / update necessary tests?
• Add / update outdated documentation?

[jezdez]

Would be worthwhile to use https://docs.python.org/3/library/importlib.resources.html for this?

[jaimergp]

One day, yes. That path has worked for a long time so I just want to unblock this issue to release 3.9.1.

[marcoesters]

I think this is an acceptable workaround for now.