Cache remote jwks in cloudflare workers #661

Since there would be no mechanism for invalidating that cf: cache coming from the library you're better off making the cached fetch yourself and piping its Response's parsed json to createLocalJWKSet. You'd re-fetch yourself when https://github.com/panva/jose/blob/adc0f69362d4c7c95bc0dde9b871f0f95c599a49/docs/classes/util_errors.JWKSNoMatchingKey.md is thrown