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

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-ANSIREGEX-1583908
- https://snyk.io/vuln/SNYK-JS-REQUEST-3361831
- https://snyk.io/vuln/SNYK-JS-TOUGHCOOKIE-5672873
- https://snyk.io/vuln/SNYK-JS-UNSETVALUE-2400660

package.json

@@ -18,13 +18,13 @@
   "dependencies": {
     "asar": "^1.0.0",
     "axios": "^0.18.0",
-    "chokidar": "^2.1.2",
+    "chokidar": "^3.0.0",
     "csp-parse": "github:macropodhq/csp-parse",
     "deepmerge": "^3.2.0",
     "fs-extra": "^7.0.1",
     "keytar": "4.4.1",
     "nedb": "^1.8.0",
-    "node-sass": "^4.11.0",
+    "node-sass": "^7.0.2",
     "original-fs": "^1.0.0",
     "semver": "^5.6.0",
     "tar-fs": "^2.0.0"