Bump node-fetch from 2.6.6 to 2.6.7 in /test (#1700)

Bumps [node-fetch](https://github.com/node-fetch/node-fetch) from 2.6.6 to 2.6.7.
- [Release notes](https://github.com/node-fetch/node-fetch/releases)
- [Commits](https://github.com/node-fetch/node-fetch/compare/v2.6.6...v2.6.7)

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

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

test/package.json

@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "node-fetch": "^2.6.6",
+    "node-fetch": "^2.6.7",
     "ws": "^8.2.3"
   }
 }