Move colima tests to buildkite

[rfay]

Running colima + ddev on github actions runner is just too terribly painfully slow.

Move it to our buildkite runners.

[rjensen26]

@rfay , I was wondering if you changed https://github.com/ddev/ddev/blob/master/.github/workflows/colima-tests.yml#L107C10-L107C11

--vm-type=qemu --mount-type=sshfs

to

--vm-type=vz --mount-type=virtiofs

I know the qemu was a lot slower on M1 pro macOs and was a lot faster using virtiofs.

[rfay]

• Github only supports macOS 13 so far, and not that well. VZ works a lot better on macOS 14.
• We aren't yet recommending VZ/virtiofs in the docs, so we want to test what we're recommending...

[rfay]

Colima is now failing almost all the time for reasons we can't quite understand, so this is going to be one path forward.