chore: bump prettier from 3.9.8 to 3.9.9 - #2148

On November 2, 2026, GitHub will restrict `pull_request_target` on public repositories by default. To continue allowing the event trigger, configure an Actions policy. Learn more: https://gh.io/securely-using-pull_request_target#default-policy-for-pull_request_target

git-auto-commit is running on a 'pull_request_target' event. This trigger can be a security risk: a malicious pull request could potentially exfiltrate your repository secrets. See https://docs.github.com/en/actions/reference/security/securely-using-pull_request_target and the 'pull_request_target' section in the git-auto-commit README (https://github.com/stefanzweifel/git-auto-commit-action#using-the-action-in-a-pull_request_target-workflow) for safer usage. Set 'disable_pull_request_target_trigger_warning: true' to suppress this warning.