562bb012fb
- Added custom manager in renovate.json to track Go dependencies patched in Dockerfile for Caddy CVE fixes. - Updated Dockerfile to pre-fetch and override vulnerable module versions for dependencies (expr, quic-go, smallstep/certificates) during the build process. - Improved build resilience by implementing a fallback mechanism for Caddy versioning. - Introduced tests for user SMTP audit, covering invite token security, input validation, authorization, and SMTP config security. - Enhanced user invite functionality with duplicate email protection and case-insensitive checks. - Updated go.work.sum to include new dependencies and ensure compatibility.