chore(deps): bump pug from 3.0.2 to 3.0.3 in /packages/backend

Bumps [pug](https://github.com/pugjs/pug) from 3.0.2 to 3.0.3.
- [Release notes](https://github.com/pugjs/pug/releases)
- [Commits](https://github.com/pugjs/pug/compare/pug@3.0.2...pug@3.0.3)

---
updated-dependencies:
- dependency-name: pug
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

packages/backend/package.json

@@ -154,7 +154,7 @@
 		"pkce-challenge": "4.1.0",
 		"probe-image-size": "7.2.3",
 		"promise-limit": "2.7.0",
-		"pug": "3.0.2",
+		"pug": "3.0.3",
 		"punycode": "2.3.1",
 		"qrcode": "1.5.3",
 		"random-seed": "0.3.0",