fix: Address all CVEs and CI/CD failures

- Fix docker.yml Trivy configuration to use trivy.yaml and .trivyignore
- Add QEMU setup for ARM64 multi-platform builds
- Upgrade to Python 3.12.7 for latest security patches
- Update all dependencies to latest secure versions
- Add security hardening to Dockerfile
- Fix multi-platform Docker build issues

This addresses all reported CVEs and CI/CD failures.