Update GitHub actions with new Xcode select action

[DivineDominion]

devbotsxyz/xcode-select is archived, so I switched to an action that's still supported: https://github.com/marketplace/actions/xcode-select-version

[codecov-commenter]

Codecov Report

Merging #504 (6363944) into master (4cd14d0) will not change coverage.
Report is 1 commits behind head on master.
The diff coverage is n/a.

❗ Current head 6363944 differs from pull request most recent head fd30be5. Consider uploading reports for the commit fd30be5 to get more accurate results

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

@@           Coverage Diff           @@
##           master     #504   +/-   ##
=======================================
  Coverage   98.96%   98.96%           
=======================================
  Files           6        6           
  Lines         193      193           
=======================================
  Hits          191      191           
  Misses          2        2           

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[DivineDominion]

We will likely need to adjust the Test Matrix for Xcode 14.

I'm working on that in a parallel branch.

[DivineDominion]

@mjarvis Do you have any idea why the iOS test might fail? Asking first to avoid one or more hours of research -- but if you also don't know, no problem :)

[mjarvis]

@mjarvis Do you have any idea why the iOS test might fail? Asking first to avoid one or more hours of research -- but if you also don't know, no problem :)

Not sure -- I've re-run the job to see if it was just a temporary issue. The xcodebuild command works for me locally.

[DivineDominion]

That's weird.

I've triggered another build with debug logging to see if there's a difference.

This is terrible, because if it continues to fail, the CI step is useless.

[DivineDominion]

GH Actions broke and merging was impossible