Pull Request Checklist

• Have you read "How to write the perfect pull request"?
• Have you read the contributing guidelines?
• Have you added tests for any changed functionality?
• Have you added the Jira issue number
  as the first thing in your pull request title (e.g. AO3-1234 Fix thing)
• Do you have fewer than 5 pull requests already open? If not, please wait
  until they are reviewed and merged before creating new pull requests. (This updates a stale PR, hopefully this doesn't count towards my limit —but I can close one of mine if necessary.)

Issue

https://otwarchive.atlassian.net/browse/AO3-5052

Purpose

Touches the all the series for a user or pseud when either of those are changed. This will bust the cache on the byline so that series blurb will show the updated pseud or username right away regardless of caching status.

This PR adds a spec on top of tlee911's changes.

Testing Instructions

See Jira issue

References

tlee911’s PR.

Credit

tlee911
weeklies (she/her)