Add E2E Tests for HTTPS Actions Server

[JoseSzycho]

Add E2E Tests for HTTPS Actions Server

Description

We need to implement end-to-end tests for the HTTP server in the actions server component. These tests should verify the server's behavior.

Test Cases to Cover

1. Endpoint Testing

• /v1/actions/create-user-account
  • Test signature validation
  • Test user creation into Milo Api Server

2. Endpoint Testing

• Verify JWT customization for both human and machine users
  • /v1/actions/customize-jwt
  • Test signature validation