fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-LODASH-73638
- https://snyk.io/vuln/SNYK-JS-LODASH-73639

Author: snyk-test

package-lock.json

@@ -60,7 +60,7 @@
   },
   "dependencies": {
     "loader-utils": "1.1.0",
-    "lodash": "4.17.5",
+    "lodash": "4.17.11",
     "postcss": "6.0.20",
     "svg2ttf": "4.1.0",
     "svgicons2svgfont": "9.0.3",