feat: add bump-version.sh script for version management

Automates version bumps across all version source files:
- Cargo.toml (PRIMARY - workspace.package.version)
- debian/changelog (prepend new entry)
- debian/control (update Version field)
- scripts/build-package.sh (update VERSION variable)
- frontend/package.json (update version field)
- Stale references check after bump

Usage: ./scripts/bump-version.sh <new_version> <old_version>

migrations/009_health_check_audit_actions.sql

@@ -0,0 +1,4 @@
+-- Add health check audit_action enum values
+ALTER TYPE audit_action ADD VALUE IF NOT EXISTS 'health_check_created';
+ALTER TYPE audit_action ADD VALUE IF NOT EXISTS 'health_check_updated';
+ALTER TYPE audit_action ADD VALUE IF NOT EXISTS 'health_check_deleted';