chore: Update release.yml to release downstream repositories

[gethinwebster]

Description

This updates the release workflow to subsequently run the release workflows in downstream repositories (currently only chat-components configured for testing).

See also cloudscape-design/chat-components#68 and cloudscape-design/actions#76

Approach based on https://medium.com/hostspaceng/triggering-workflows-in-another-repository-with-github-actions-4f581f8e0ceb

Related links, issue #, if available: AWSUI-60697, ajEoAR4R2fG4#temp:C:eGb718a2a8234034c4eaab90ccdd

How has this been tested?

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.54%. Comparing base (5024307) to head (986dc51).
Report is 40 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3484      +/-   ##
==========================================
+ Coverage   96.49%   96.54%   +0.05%     
==========================================
  Files         804      805       +1     
  Lines       23090    23446     +356     
  Branches     7587     8106     +519     
==========================================
+ Hits        22281    22637     +356     
+ Misses        802      755      -47     
- Partials        7       54      +47     

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[just-boris]

There is github-cli available in this environment: https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/using-github-cli-in-workflows

Which you could use instead of raw curl commands

[gethinwebster]

this particular action is only available as an extension: https://github.com/mdb/gh-dispatch

[just-boris]

:(