fix: upgrade pug from 2.0.3 to 2.0.4 (#7)

Snyk has created this PR to upgrade pug from 2.0.3 to 2.0.4.

See this package in npm:
https://www.npmjs.com/package/pug

See this project in Snyk:
https://app.snyk.io/org/sammytezzy/project/504c02fd-2e04-45ae-ada1-d69d5fbc6c08?utm_source=github&utm_medium=referral&page=upgrade-pr

Co-authored-by: snyk-bot <[email protected]>

Author: X-oss-byte