Closes: https://github.com/fleetdm/confidential/issues/16057
Changes:
- Added `email-application-submitted`, an email template that is used to
reply to users who fill out the "Apply" form
- Updated the `deliver-application-submission` action to return an
`invalidEmailDomain` response if a user's email address is on the
bannedEmailDomainsForContactFormSubmissions list, and to send a "Thank
you for applying to Fleet" email to the user who submitted the form.
- Stubbed a new custom config variable: `applicationReplyEmailAddress`
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **New Features**
* Applicants receive a "Thanks for applying to Fleet" confirmation email
with a personalized greeting and ~7-day expectation.
* Added an application-submitted email template and preview using the
email layout.
* **Improvements**
* Added a hidden honeypot field to the application form; submissions
with it filled are silently discarded.
* Added email-domain validation with a specific form error and clearer
error rendering.
* Redirected jobs to the internal handbook open-positions section.
* **Chores**
* Added a commented placeholder for an application reply email setting.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Eric
b911c82c30