Bump node-fetch from 2.6.0 to 2.6.7 in /BackendV2

Bumps [node-fetch](https://github.com/node-fetch/node-fetch) from 2.6.0 to 2.6.7.
- [Release notes](https://github.com/node-fetch/node-fetch/releases)
- [Commits](node-fetch/node-fetch@v2.6.0...v2.6.7)

---
updated-dependencies:
- dependency-name: node-fetch
  dependency-type: direct:production
...

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Author: dependabot[bot]

BackendV2/package-lock.json

@@ -24,7 +24,7 @@
     "morgan": "~1.9.1",
     "ms": "^2.1.2",
     "mysql2": "^2.1.0",
-    "node-fetch": "^2.6.0",
+    "node-fetch": "^2.6.7",
     "node-rsa": "^1.0.8",
     "nodemon": "^2.0.4",
     "passport": "^0.4.1",