fix security vulnerability of node-fetch

[aquibbaig]

currently, we see a severe error of potential security vulnerability of the module node-fetch by dependabot, which cant be automatically fixed it seems. So, if it is of some importance, we can either upgrade the dependency or we can ignore the warning manually.

Remediation

Upgrade node-fetch to version 2.6.1 or later. For example:

"dependencies": {
  "node-fetch": ">=2.6.1"
}

or…

"devDependencies": {
  "node-fetch": ">=2.6.1"
}

[portante]

Fixed by #93.