fix(package): update @types/jsonwebtoken to version 8.3.4

Closes #352

Author: greenkeeper[bot]

package.json

@@ -133,7 +133,7 @@
     "@ngx-meta/core": "7.0.0",
     "@ngx-translate/core": "11.0.1",
     "@types/dotenv": "6.1.1",
-    "@types/jsonwebtoken": "8.3.2",
+    "@types/jsonwebtoken": "8.3.4",
     "@types/node": "12.0.0",
     "@types/object-path": "0.11.0",
     "bind-observable": "1.0.2",