fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/npm:braces:20180219
- https://snyk.io/vuln/npm:node-forge:20180226

Author: snyk-bot

package.json

@@ -50,15 +50,15 @@
     "glob": "^7.1.1",
     "global-tunnel-ng": "^2.1.0",
     "handlebars": "^4.0.6",
-    "http-proxy-middleware": "^0.17.4",
+    "http-proxy-middleware": "^0.18.0",
     "inquirer": "^1.0.2",
     "ip-range-check": "0.0.2",
     "is-ip": "^2.0.0",
     "li": "^1.0.1",
     "mime-types": "^2.1.11",
     "negotiator": "^0.6.0",
     "node-fetch": "^2.1.2",
-    "node-forge": "^0.6.38",
+    "node-forge": "^0.7.4",
     "nodemailer": "^3.1.4",
     "oidc-op-express": "^0.0.3",
     "rdflib": "^0.17.1",