Bump node-fetch from 1.3.2 to 2.6.1

Bumps [node-fetch](https://github.com/bitinn/node-fetch) from 1.3.2 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](https://github.com/bitinn/node-fetch/commits/v2.6.1)

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

Author: dependabot[bot]

package.json

@@ -152,7 +152,7 @@
     "moment": "2.13.0",
     "moment-timezone": "0.5.4",
     "no-ui-slider": "1.2.0",
-    "node-fetch": "1.3.2",
+    "node-fetch": "2.6.1",
     "node-uuid": "1.4.7",
     "pegjs": "0.9.0",
     "postcss-loader": "1.2.1",