Run full tests suite and just exclude some irrelevant tests

[voxik]

So far, only the tagged subset was executed.

[voxik]

At least I see everywhere just:

+ bundle exec cucumber --strict --tags @post-3-9
Using the default profile...
...

1 scenario (1 passed)
3 steps (3 passed)

E.g. https://github.com/rspec/rspec-its/actions/runs/11475873435/job/31934665254

[JonRowe]

Thanks for this, but I actually have plans to drop these tags entirely by updating the supported Ruby matrix.