release: @formio/bootstrap@4.0.0

[lane-formio]

Automated sync from formio/nirvana for @formio/bootstrap@4.0.0 (monorepo bf6e985d74).

After merging, an engineer will tag the release:

git fetch origin
git tag v4.0.0 origin/main
git push origin v4.0.0

Generated by gh-workflows/bin/sync-oss.mjs.