fix(deps): update dependency node-fetch to v2.6.7 [security]

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

functions/package-lock.json

@@ -17,7 +17,7 @@
     "bitly": "7.1.0",
     "firebase-admin": "8.12.1",
     "firebase-functions": "3.6.2",
-    "node-fetch": "2.6.0",
+    "node-fetch": "2.6.7",
     "request": "2.88.2",
     "telegraf": "3.38.0",
     "twilio": "3.45.0"