Add support for PowerShell 7.3 in GHA

[jborean93]

Fixes compatibility with PowerShell 7.3 on Windows through GitHub Actions when one of the options for cibuildwheel is empty.

I'm not sure how you want to go about this but I believe this should solve the issue with the migration of GHA to PowerShell 7.4 that is happening now.

Fixes: #1740

[jborean93]

I've used pythongssapi/python-gssapi#342 to test out these changes.

• Runner image 20240122.1.0 (PowerShell 7.2) - https://github.com/pythongssapi/python-gssapi/actions/runs/7703855440/job/20995280412?pr=342
• Runner image 20240128.1.0 (PowerShell 7.4) - https://github.com/pythongssapi/python-gssapi/actions/runs/7703855440/job/20995280547?pr=342

Both work with the changes in the PR.

[henryiii]

I think this is fine for a quick fix. Hopefully in a few months everyone will be on 7.3+ and we can simply this to look much more like the bash version, getting rid of the weird double quoting finally.

[jborean93]

I would assume you would still want this fix due to self hosted runners that might be running with 7.2. 7.2 EOL is November 8th 2024 https://learn.microsoft.com/en-us/powershell/scripting/install/powershell-support-lifecycle?view=powershell-7.4#powershell-end-of-support-dates

[joerick]

thanks for the quick PR. I guess we want to get this out pretty quick if the Windows image update rollout is gonna break everyone.

[jborean93]

Thanks for the reviews!

[henryiii]

I'd probably not bother to remove this workaround until 2025 or so. Just nice to think we can eventually remove it.