Update CI: No nightly tests, improve macOS CI setup + use julia-actions/cache

[devmotion]

In this draft I see if one can achieve something like #1861 without running tests twice if no prerelease is available. Additionally, This PR removes the nightly tests (see #1861), includes a fix for the mac CI setup (see #1856), and switches to julia-actions/cache for caching.

Edit: The PR also includes #1862 which fixes tests on Julia 1.11-beta1 (see #1862 (comment)).

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.96%. Comparing base (f852803) to head (8aee234).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1863   +/-   ##
=======================================
  Coverage   85.96%   85.96%           
=======================================
  Files         144      144           
  Lines        8647     8647           
=======================================
  Hits         7433     7433           
  Misses       1214     1214           

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[andreasnoack]

without running tests twice if no prerelease is available.

I don't think that will happen. There will only be a single run for julia@1 but that run might be a prerelease, see https://github.com/JuliaStats/Distributions.jl/actions/runs/9250768369/job/25444947763?pr=1862, and maybe that is not what we want.

[devmotion]

There will only be a single run for julia@1 but that run might be a prerelease,

Indeed, my comment above was incorrect: I was already assuming that we would want to change that PR such that we continue testing with the latest stable release.

[andreasnoack]

I'm wondering if it's worthwhile to add all the complexity to the CI.yml file for this, though. I think testing prereleases in dedicated PRs is reasonable. It requires a little effort but not much.

[devmotion]

I agree, in particular given that tests seem to fail on the prerelease as well (and the fact that the PR in its current state actually doesn't skip the duplicate runs).