Fix Runtime punycode Deprecation Error (#2662)

[davnotdev]

Addresses #2662.

After the builtin punycode implementation was deprecated, quicktype now crashes at runtime from a deprecation error. This fix temporarily overrides whatwg-url to version ^13.0.0, the earliest version that properly uses a userspace punycode implementation.

whatwg-url is a dependency of node-fetch 2.x which is a dependency of cross-fetch. In the future, updating cross-fetch should fix the issue without having to override whatwg-url once this issue is addressed.

Also, further work should be done to update @vscode/vsce, eslint-config-canonical, and ajv These are dev dependencies, so they should not affect runtime, but are still prone to the punycode error.