Add New Roadmap

[amanifarooque]

Preview Link: https://cg-a72b65a7-73f0-4859-a1d7-dc953cf6ade8.sites.pages.cloud.gov/preview/gsa/search-gov-website/fy23-q2-roadmap/about/updates/roadmap/

PR Checklist

• [x] Test Cloud.gov Pages preview link for your branch for functionality - make sure all links and buttons work, javascript works as intended, and updates display as expected
• [N/A] Conduct a HemingwayApp review of the content for plain language. Request plain language review in #helpwanted if needed before merging this PR
• [N/A] Conduct a Lighthouse Audit via Chrome Developer Tools. Identify any issues that must be addressed before merging, and fix
• [x] Ensure no non-public information is published in the commit messages

[amanifarooque]

@dawnpm I'm deleting DS store files that snuck in previously, so the changes in this PR should remain to remove them. I only see one number mismatch; can you clarify why the other needs to change?