Bump macOS CI versions

[yuzawa-san]

per https://github.com/orgs/Homebrew/discussions/5603

macOS 12 is no longer supported by homebrew. it will run but the fast installation from "bottles" (precompiled blobs) will no longer work. this causes the dependencies to be compiled from source which takes a very long time, hence the timeouts.

for this reason i'm moving to the later versions which are still supported and have the fast bottles.

NOTE: the sdk baseline is not changing, so versions 12 and earlier should still work.

[yuzawa-san]

@argilo I added your changes and also made some permissions fixes to address macOS 14 runner quirks https://github.com/orgs/Homebrew/discussions/5603

both the CI and Build workflows appear to have passed:

https://github.com/yuzawa-san/gqrx/actions/runs/11365851271
https://github.com/yuzawa-san/gqrx/actions/runs/11365851267

BUT: i was incorrect about that baseline changing. i'm going to put this into draft until i can dig into that further.

[argilo]

i was incorrect about that baseline changing.

I think it's unavoidable as long as the build uses packages from Homebrew.

[argilo]

I was holding off on updating to macOS 13 as long as I could to avoid increasing the baseline, but at this point there is no choice.

Perhaps getting packages from conda or building from source would solve the problem, but I don't know enough about building software on macOS to do that.

[argilo]

Thanks for the changes.

It looks like I accidentally checked in an unrelated change on the fix-win-build branch. I squashed commits here and remove that extraneous change. I'll merge once CI passes.

[yuzawa-san]

i am going to continue to dig into the baseline.

i'll also take a look at ARM builds as well since I do have experience on mac builds.

[argilo]

Thanks.

It would be great to have a proper ARM build, as there is plenty of interest: #1104

I believe the macos-14 runner is ARM, so that could be used if needed.

Unfortunately I don't have any hardware myself to use for testing.

[argilo]

I pushed one more fix to get code signing working. (For some reason base64's --output argument was not working on macOS 13.) CI & builds should be working on the master branch now.

[argilo]

Perhaps getting packages from conda

By the way, Gqrx's Linux AppImage build is based on conda packages. It appears that conda packages target macOS 10.13+, so they may be a good choice.