Updated jsonwebtoken dependency to 9+

[chriswhite199]

As per npm audit, jwonwebtoken has a moderate level vuln:

jsonwebtoken  <=8.5.1
Severity: moderate
jsonwebtoken unrestricted key type could lead to legacy keys usage  - https://github.com/advisories/GHSA-8cf7-32gw-wr33
jsonwebtoken's insecure implementation of key retrieval function could lead to Forgeable Public/Private Tokens from RSA to HMAC - https://github.com/advisories/GHSA-hjrf-2m68-5959
jsonwebtoken vulnerable to signature validation bypass due to insecure default algorithm in jwt.verify() - https://github.com/advisories/GHSA-qwph-4952-7xr6
fix available via `npm audit fix --force`
Will install jsonwebtoken@9.0.2, which is a breaking change
node_modules/jsonwebtoken

This PR:

• Updates jsonwebtoken to latest 9+ version
• Updates JWTSign operation for backwards compatibility with insecure keys and invalid asym key types

As a future feature suggestion, add the insecure / invalid key flags as options to the module

[a3957273]

Thanks for the contribution. ❤️