chore(deps): bump node-fetch from 2.6.0 to 2.6.1

Bumps [node-fetch](https://github.com/bitinn/node-fetch) from 2.6.0 to 2.6.1.
- [Release notes](https://github.com/bitinn/node-fetch/releases)
- [Changelog](https://github.com/node-fetch/node-fetch/blob/master/docs/CHANGELOG.md)
- [Commits](node-fetch/node-fetch@v2.6.0...v2.6.1)

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

Author: dependabot[bot]

package-lock.json

@@ -72,7 +72,7 @@
     "ical": "^0.6.0",
     "megalodon": "^2.1.1",
     "mz": "^2.7.0",
-    "node-fetch": "^2.6.0",
+    "node-fetch": "^2.6.1",
     "timezone-support": "^2.0.2",
     "tweet.md": "^3.0.0",
     "twitter": "^1.7.1",