Skip running tests when the only file changed is markdown

Take this PR for example: https://github.com/Azure/azure-sdk-for-js/pull/15523.

All it does is update the date in the changelog before a release. All tests associated with that folder is run in the PR CI which adds no value. Is there a way for the PR CI to skip the tests the only files changed are markdown files?

What I am looking for ways to reduce the wait time on PRs that are only trying to update markdown files. No issues in running the link verififcation and other checks.

(Not sure if other language repos have use for running the tests when markdown files are changed)