The autoupdate workflow authenticated its branch-update pushes with the
default GITHUB_TOKEN. Pushes made with GITHUB_TOKEN do not re-trigger
downstream workflow runs, so status checks were not re-run on updated PR
branches.
Source the token from the STATUS_CHECKS_RETRIGGER_TOKEN PAT (scoped to the
"production" environment) instead. The action still reads GITHUB_TOKEN from
env, so only the value changes. Add `environment: production` to the job so
the environment-scoped secret is accessible, and update the explanatory
comment accordingly.
Closes#23
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>