Follow-up fixes to updater-schemas workflow (#492)

* Follow-up fixes to updater-schemas workflow

See #491

* Set permissions

Merge pull request #489 from wp-cli/dependabot/github_actions/peter-e…

…vans/create-pull-request-8.1.1

Bump peter-evans/create-pull-request from 8.1.0 to 8.1.1

Further Windows compatibility improvements (#485)

PHPCS fix

Merge pull request #467 from wp-cli/dependabot/github_actions/actions…

…/checkout-6

Bump actions/checkout from 5 to 6

Merge pull request #440 from wp-cli/regenerate-readme

Merge pull request #424 from wp-cli/fix/423-themejson

Merge pull request #413 from wp-cli/update-phpunit-config

Merge pull request #408 from ramonjd/add/description-field-to-theme-json

Merge pull request #389 from wp-cli/fix/make-php-skip-empty