Rails edge can only run on ruby 3.1 and above

[tannalynn]

Our nightly Ci is failing on 2.7 and 3.0 because of a bundler error with the rails edge env tests.

Because every version of rails depends on Ruby >= 3.1.0
  and Gemfile depends on rails >= 0,
  Ruby >= 3.1.0 is required.
So, because current Ruby version is = 3.0.6,
  version solving has failed.
Could not find compatible versions

Since rails edge needs 3.1+, I've removed the rails edge tests from 2.7 and 3.0 in our ci_cron

[kaylareopelle]

Thanks for fixing this!

[kaylareopelle]

🎉

[github-actions]

SimpleCov Report

	Coverage	Threshold
Line	94.23%	94%
Branch	82.8%	82%