Validate PR title fails on every recreated dependabot PR (capitalized Bump/Update)

Every PR in the recreated dependabot batch (#3541–#3554, generated under the restructured .github/dependabot.yml) failed the Validate PR title check because dependabot now emits chore(deps): Bump ... / chore(deps): Update ... with a capitalized verb, while the title validator requires a lowercase subject after the type prefix. The same happened to #3386/#3392 after their recreation. Each PR had to be manually retitled to lowercase before it could merge — pure babysitting.

Options, in order of preference:

1. Relax the title validator to accept a capitalized first word for app/dependabot-authored PRs (or case-insensitively match the subject in general — conventional-commits tooling generally treats the description as free text).
2. Keep the strict rule and have a small workflow auto-retitle dependabot PRs (chore(deps): Bump → chore(deps): bump) on pull_request_target: opened.

Either removes a manual step from every future dependabot batch. The check name is Validate PR title; dependabot's verb capitalization is not configurable via commit-message settings, so this has to be handled on our side.

Start by locating the workflow or configuration for the Validate PR title check and inspect the recreated Dependabot setup in .github/dependabot.yml. Compare the titles from PRs #3541–#3554 and verify that future capitalized Dependabot verbs pass validation or are automatically retitled without manual intervention.