chore: regenerate using latest spec (2025-09-15)

[fern-api]

This pull request introduces several improvements and updates across the codebase. The most significant changes include refactoring header handling in the Actions management client, adding new resource clients to the ManagementClient, and updating package management and dependencies.

Management Client Enhancements

• Added new resource clients (SupplementalSignals, Groups, and RiskAssessments) to the ManagementClient class, including their imports, protected members, and public getters, enabling access to additional API endpoints.

Actions Resource Refactoring

• Refactored header handling in all Actions resource methods by introducing a local _headers variable for consistent header merging, improving maintainability and clarity. This change affects all major CRUD and utility methods in src/management/api/resources/actions/client/Client.ts.

• Changed default values for pagination parameters (page) in the Actions resource from 1 to 0 for consistency with zero-based indexing.

Package Management and Dependency Updates

• Updated the package.json version from 5.0.0-beta.0 to 5.0.0 to mark a stable release.
• Reorganized and updated devDependencies in package.json for better clarity and maintainability, including moving some dependencies and updating their versions.
• Swapped the order of auth0-legacy and uuid in the dependencies section for consistency.

Miscellaneous

• Added pnpm-lock.yaml to .npmignore to prevent publishing the lock file.

These changes collectively improve the maintainability, extensibility, and reliability of the codebase.