Add Generative AI link to the link checking exemption

[jeff-horton-ho-sas]

Code change

Add https://www.gartner.com/en/topics/generative-ai to the link checking exemption list to prevent flaky tests

I can confirm:

Accessibility considerations

• [X] Please review the accessibility checks for layout changes.
• [X] This change will not change layouts, page structures or anything else that might impact accessibility