Integration with jwks-rsa is broken when moving from 6.1.2 to 7.4.2 breaks

[nsshunt]

Linked to a previously closed issue (#281), the integration with jwks-rsa to this module no longer works.

#281

The issue has also been noted within the jwks-rsa repo as well.

See issue #281 for more details.

[gtwilliams03]

I also think this might have broken jsonwebtoken - as soon as I upgraded to v7.4.2 I couldn't use that package anymore.

[gtwilliams03]

Rolling this package back to 6.1.2.

[kevinrutherford]

+1, had to roll back

[jfromaniello]

for reference, this PR should fix the issue:

auth0/node-jwks-rsa#297

[jfromaniello]

Fixed in jwks-rsa@2.1