spec: Support ruby 3.1 and 3.3 error message formats

[kbrock]

This message is different for ruby 3.3 and 3.1

Change phrase to be the common factor for both ruby versions

This is currently the only failure for 3.1/3.3 on master (besides the gem changes)

[Fryguy]

Label says 3.2, but the title says 3.3 - do you know which one introduced the change?

[kbrock]

update:

• swapped a_string_matching back to a_string_including

[miq-bot]

Checked commit https://github.com/kbrock/manageiq/commit/076fdf50dd33e835cda1c48fe20554e1abd58cd2 with ruby 3.1.5, rubocop 1.56.3, haml-lint 0.51.0, and yamllint 1 file checked, 0 offenses detected Everything looks fine. :+1: