chore(deps-dev): bump pug from 2.0.4 to 3.0.1

Bumps [pug](https://github.com/pugjs/pug) from 2.0.4 to 3.0.1.
- [Release notes](https://github.com/pugjs/pug/releases)
- [Commits](https://github.com/pugjs/pug/compare/pug@2.0.4...pug@3.0.1)

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

Author: dependabot[bot]

package.json

@@ -52,7 +52,7 @@
     "less": "^3.9.0",
     "lint-staged": "^8.0.5",
     "prettier": "^1.16.1",
-    "pug": "^2.0.3",
+    "pug": "^3.0.1",
     "sass": "^1.23.7",
     "semantic-release": "^15.13.2",
     "stylus": "^0.54.5",