Create Robust GitHub Action for Automated Dependency Vulnerability Scanning

Design a comprehensive TypeScript GitHub Action that automatically scans project dependencies for security vulnerabilities, generates detailed reports, and can be configured with custom severity thresholds. The action should integrate with GitHub's security features, support multiple package managers (npm, yarn, pnpm), and provide configurable webhook notifications for critical security findings. Include type-safe configuration interfaces and demonstrate how to handle different scanning scenarios across monorepo and microservice architectures.