chore: update version to 2.0.3 and dependencies

- Bump version from 2.0.2 to 2.0.3 in package.json
- Update @fastify/cors from ^11.0.0 to ^11.0.1
- Update fastify from ^5.2.1 to ^5.4.0

feat: add sensitive headers filtering in request logging

- Introduced app.sensitiveHeaders property to exclude sensitive headers from logs

Author: zhiyi7