fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-LODASH-590103

Author: snyk-bot

package.json

@@ -49,7 +49,7 @@
     "bpk-mixins": "^19.1.20",
     "chokidar": "^3.0.0",
     "fast-glob": "^3.0.0",
-    "lodash": "^4.17.11",
+    "lodash": "^4.17.20",
     "node-sass": "^4.12.0",
     "node-sass-tilde-importer": "^1.0.2",
     "ora": "^4.0.0",