[ACV2-1619] Remediate next and markdownlint-cli2 Vulnerabilities

[justincorsha]

Before you submit your PR, make sure you check each of the following:

1. I have read the Contributing Guidelines and signed the Contributor License Agreement.
2. My code is clean and ready-to-PR, including being free of lint errors and dead code
3. I have tested my change / code and am confident that it works
4. I have filled in the template below completely and accurately

Changelog

• Ran npm audit fix --force (to force breaking changes, which were checked in regression testing) to update next and markdownlint-cli2 packages and remediate vulnerabilities

Testing

• Ran npm audit and checked that zero vulnerabilities were found
• Stood up Cast, checked that there were no regressions and that all analyses displayed correctly:
  

Unit Tests

• Ensured that unit tests passed

[justincorsha]

Converting to draft to investigate using dependabot for all current vulnerabilities

[justincorsha]

Closing in favor of dependabot PR: #143