ci: update ci build matrix

[inkydragon]

Test with:

• [ubuntu-latest, windows-latest, macos-15-intel] x [x64] x ['lts', '1']
• macos-latest x [aarch64] x ['lts', '1']
• ubuntu-latest x [x86] x ['1']
• (tier 2) ubuntu-24.04-arm x [aarch64] x ['1']

replace #313, fix #315

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.42%. Comparing base (d70026a) to head (d46b83e).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #316      +/-   ##
==========================================
+ Coverage   92.38%   96.42%   +4.04%     
==========================================
  Files           7        7              
  Lines         735      784      +49     
==========================================
+ Hits          679      756      +77     
+ Misses         56       28      -28     

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[Copilot]

Pull request overview

This PR consolidates ARM architecture testing by removing the separate UnitTestArm.yml workflow and integrating ARM testing into the main UnitTest.yml workflow. The changes modernize the CI configuration by adding concurrency controls, updating Julia version specifiers, and attempting to use native ARM runners instead of emulation.

Key Changes:

• Removes separate ARM workflow that used Docker-based emulation via uraimo/run-on-arch-action
• Adds concurrency configuration to cancel redundant PR builds
• Updates Julia version testing from '1.6' to 'lts' and attempts to add native ARM runner support

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 5 comments.

File	Description
.github/workflows/UnitTestArm.yml	Deleted - separate ARM workflow using Docker emulation removed
.github/workflows/UnitTest.yml	Updated to consolidate testing, add concurrency controls, attempt ARM runner integration, and modernize Julia version specs

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[Copilot]

The removal of Julia '1.0' from the test matrix is inconsistent with the package's compatibility declaration in Project.toml, which specifies 'julia = "1"' (meaning Julia 1.0+). The previous UnitTestArm.yml workflow tested Julia 1.0. If the package still claims to support Julia 1.0, it should be tested in CI. If Julia 1.0 support is being dropped, the Project.toml compat entry should be updated accordingly.

[Copilot]

The 'nightly' Julia version has been removed from the test matrix. While this simplifies CI, testing against nightly builds can help catch compatibility issues early before new Julia versions are released. Consider whether removing nightly testing is intentional and aligns with the project's maintenance goals.

[Copilot]

The runner name 'macos-15-intel' does not appear to be a valid GitHub-hosted runner. As of macOS 15, GitHub-hosted runners use ARM64 (Apple Silicon) architecture. For Intel-based macOS runners, you should use 'macos-13' which is the last Intel-based macOS runner provided by GitHub. If you need Intel testing on macOS, consider using 'macos-13', or if you want the latest macOS on ARM, use 'macos-latest' or 'macos-15'.

Suggested change

	os: [ubuntu-latest, windows-latest, macos-15-intel]
	os: [ubuntu-latest, windows-latest, macos-13]

[Copilot]

The runner name 'ubuntu-24.04-arm' does not appear to be a standard GitHub-hosted runner. GitHub does not currently provide ARM-based Ubuntu runners as standard hosted runners. If ARM testing on Ubuntu is required, you would typically need to use self-hosted runners or alternative solutions. Consider using 'ubuntu-latest' with emulation (via setup-julia's arch parameter), or set up self-hosted ARM runners. If this is intended to be a self-hosted runner, ensure it's properly configured in your repository settings.

Suggested change

	- os: ubuntu-24.04-arm
	julia-version: 'lts'
	julia-arch: aarch64
	- os: ubuntu-24.04-arm
	- os: ubuntu-latest
	julia-version: 'lts'
	julia-arch: aarch64
	- os: ubuntu-latest

[Copilot]

The julia-version has been changed from '1.6' to 'lts'. While 'lts' is a valid specifier that should resolve to the current LTS version, note that this is a semantic change. The 'lts' specifier will automatically update to newer LTS versions when they are released, whereas '1.6' was pinned. This could introduce unexpected behavior changes in CI if a new LTS version is released. Consider whether this automatic updating behavior is desired.