Note in release docs to skip Dependabot bumps in ChangeLog

[bdraco]

What do these changes do?

Document that Dependabot bumps for dev tooling and CI actions stay out of ChangeLog; only runtime dependency bumps such as pycares belong there.

Are there changes in behavior for the user?

No, docs only.

Related issue number

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.42%. Comparing base (6496021) to head (cda15c8).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #253   +/-   ##
=======================================
  Coverage   98.42%   98.42%           
=======================================
  Files           5        5           
  Lines        1399     1399           
  Branches       73       73           
=======================================
  Hits         1377     1377           
  Misses         16       16           
  Partials        6        6           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.