chore(deps): bump node-fetch from 2.6.1 to 2.6.7 (#29)

Bumps [node-fetch](https://github.com/node-fetch/node-fetch) from 2.6.1 to 2.6.7.
- [Release notes](https://github.com/node-fetch/node-fetch/releases)
- [Commits](node-fetch/node-fetch@v2.6.1...v2.6.7)

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

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package.json

@@ -12,7 +12,7 @@
   "dependencies": {
     "express": "^4.16.4",
     "express-session": "^1.15.6",
-    "node-fetch": "2.6.1",
+    "node-fetch": "2.6.7",
     "openid-client": "^3.0.0",
     "passport": "^0.4.0"
   },