Bump loader-utils from 1.1.0 to 1.4.2

Bumps [loader-utils](https://github.com/webpack/loader-utils) from 1.1.0 to 1.4.2.
- [Release notes](https://github.com/webpack/loader-utils/releases)
- [Changelog](https://github.com/webpack/loader-utils/blob/v1.4.2/CHANGELOG.md)
- [Commits](webpack/loader-utils@v1.1.0...v1.4.2)

---
updated-dependencies:
- dependency-name: loader-utils
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

npm-shrinkwrap.json

@@ -131,7 +131,7 @@
     "i18n-calypso": "^1.8.4",
     "imports-loader": "0.8.0",
     "is-my-json-valid": "^2.20.5",
-    "loader-utils": "1.1.0",
+    "loader-utils": "1.4.2",
     "lodash": "^4.17.21",
     "mini-css-extract-plugin": "0.4.4",
     "node-sass": "^4.14.1",