ci: Build with Eask

[jcs090218]

CI improvements! :)

[zonuexe]

@jcs090218 Thank you, I want to see Eask in action right away, so I merge this 😄

[zonuexe]

https://github.com/emacs-php/php-mode/actions/runs/6166874224

windows-latest tends to fail, so maybe we should tolerate failure.
Also, macos-* is also a little slow, so it might be a good idea to build only 28.2, 29.1, and snapshot.
I have older Emacs provided by my linux package manager so I'm testing them, but I believe macOS users are using newer Emacs.

[jcs090218]

windows-latest tends to fail, so maybe we should tolerate failure.

Isn't the experimental flag enough? 🤔 The mark will still be red ❌, but the badge will be green .

Also, macos-* is also a little slow, so it might be a good idea to build only 28.2, 29.1, and snapshot.

I really like the way it acts now. It feels so consistent. 😁

I have older Emacs provided by my linux package manager so I'm testing them, but I believe macOS users are using newer Emacs.

Doesn't "manual testing" defeat the purpose of using CI/CD? 🤔 I mean I'll just let the machine run on its own! ;)

[zonuexe]

Isn't the experimental flag enough? 🤔 The mark will still be red ❌, but the badge will be green CI.

👍