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

[github-actions]

This pull request changes the compat entry for the JSON package from 0.21 to 0.21, 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 87.82%. Comparing base (f3854c0) to head (786e314).
⚠️ Report is 40 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #373   +/-   ##
=======================================
  Coverage   87.82%   87.82%           
=======================================
  Files         107      107           
  Lines        2654     2654           
=======================================
  Hits         2331     2331           
  Misses        323      323           

☔ 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.

[junsongt]

version bumped to 1, as in the merged PR #404