The Type | OtherType syntax for writing unions was introduced in Python
3.10. We want to support Python 3.7, so use an Optional type hint
instead which declares the same thing and is supported by 3.7.
Fixes d31313f7dc8018aeb92eeb8caf2dccf71a443a43
pmbootstrap/patches/.build.yml: FAILED in 5m24s
[pmb.config.sudo: Use type union compatible with Python 3.7][0] v3 from [Newbyte][1]
[0]: https://lists.sr.ht/~postmarketos/pmbootstrap-devel/patches/41651
[1]: mailto:newbyte@postmarketos.org
✗ #1001625 FAILED pmbootstrap/patches/.build.yml https://builds.sr.ht/~postmarketos/job/1001625