Add deprecation notices for Credential Manager and Stub Findings by Maffooch · Pull Request #14613 · DefectDojo/django-DefectDojo

@Maffooch @claude

….57.0

Mark credentials, credential_mappings, and stub_findings API endpoints as
deprecated with X-Deprecated and X-End-Of-Life-Date response headers and
OpenAPI schema annotations. Removal is scheduled for 2.59.0 on June 1st, 2026.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

valentijnscholten

mtesauro

…ngs UI pages

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
…as defaults

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>