Upgrade whatwg-url dependency

[dannysheridan]

Is your feature request related to a problem? Please describe.
Whenever I run a fern command on my local system, I get the following message in my terminal.

fern check
(node:96209) [DEP0040] DeprecationWarning: The punycode module is deprecated. Please use a userland alternative instead.
(Use node --trace-deprecation ... to show where the warning was created)

Describe the solution you'd like
I'd like this to go away.

Describe alternatives you've considered
I suspect it's related to using the newest version of Node.js. v21.1.0

Additional context
The trace I see shows that the deprecation warning originates from the whatwg-url module, specifically from its usage of the punycode module.

The warning is triggered by code in the whatwg-url module, as indicated by the path whatwg-url/lib/url-state-machine.js and whatwg-url/lib/URL-impl.js.
The specific lines in the fern-api bundle where this occurs are mentioned (bundle.cjs:369261 and bundle.cjs:370331).

[ACTION]
Update Dependencies: Check if there is an updated version of whatwg-url that doesn't use the deprecated punycode module. Updating these dependencies might resolve the warning in the CLI.

[dsinghvi]

This is related to two transitive dependencies (that we cannot remove) relying on node-fetch v2. For now, the best thing would be to not use node v21 to get rid of the error message. Thats what others are also advising: forcedotcom/cli#2535

│
├─ @redocly/openapi-core@npm:1.4.0
│  └─ node-fetch@npm:2.6.9 [79d8e] (via npm:^2.6.1 [79d8e])
│
└─ swagger2openapi@npm:7.0.8
   └─ node-fetch@npm:2.6.9 [79d8e] (via npm:^2.6.1 [79d8e])

[dannysheridan]

Downgraded from Node v21.1 to v20.9 and the error message went away.