DM-54238: Make v30.0.4 release notes

[timj]

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 34.88%. Comparing base (2d0a82c) to head (2214d8a).
⚠️ Report is 2 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #106   +/-   ##
=======================================
  Coverage   34.88%   34.88%           
=======================================
  Files          13       13           
  Lines        1313     1313           
  Branches      214      214           
=======================================
  Hits          458      458           
  Misses        835      835           
  Partials       20       20           

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