CompatHelper: bump compat for FastBroadcast to 1, (keep existing compat)

[github-actions]

This pull request changes the compat entry for the FastBroadcast package from 0.3.5 to 0.3.5, 1.
This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry.
It is your responsibility to make sure that your package tests pass before you merge this pull request.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.70%. Comparing base (e0324d5) to head (ee87275).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #404   +/-   ##
=======================================
  Coverage   91.70%   91.70%           
=======================================
  Files          44       44           
  Lines        2207     2207           
=======================================
  Hits         2024     2024           
  Misses        183      183           

☔ 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.