Remove dependency on deprecated request package

[JoshuaKGoldberg]

👋 Hi! Coming here from mochajs/mocha#5070: hyperlink is very nifty and I'm glad to have learned about it today, thanks! 😄

Right now there's a dependency on request, which is deprecated per request/request#3142. The native fetch should be sufficient to replace the one call to request() in this package:

hyperlink/lib/index.js

Line 205 in bfaa8dc

request(

Would you accept a PR switching to fetch?

[papandreou]

Sure thing!