fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-NODEFETCH-674311

package.json

@@ -58,7 +58,7 @@
     "moleculer": "^0.14.7",
     "moment": "^2.26.0",
     "morgan": "^1.10.0",
-    "node-fetch": "^2.6.0",
+    "node-fetch": "^2.6.1",
     "object-hash": "^2.0.3",
     "openid-client": "^3.15.1",
     "path-to-regexp": "^6.1.0",