Update dependency jsonwebtoken to v9

[mend-for-github-com[bot]]

This PR contains the following updates:

Package	Type	Update	Change
jsonwebtoken	dependencies	major	^8.5.1 -> ^9.0.0

By merging this PR, the issue #74 will be automatically resolved and closed:

Severity	CVSS Score	CVE
High	9.8	CVE-2022-23529
High	9.8	CVE-2022-23540
High	9.8	CVE-2022-23541
High	8.1	CVE-2022-23539

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Release Notes

auth0/node-jsonwebtoken

### [`v9.0.0`](https://togithub.com/auth0/node-jsonwebtoken/blob/HEAD/CHANGELOG.md#​900---2022-12-21) [Compare Source](https://togithub.com/auth0/node-jsonwebtoken/compare/v8.5.1...v9.0.0) **Breaking changes: See [Migration from v8 to v9](https://togithub.com/auth0/node-jsonwebtoken/wiki/Migration-Notes:-v8-to-v9)** ##### Breaking changes - Removed support for Node versions 11 and below. - The verify() function no longer accepts unsigned tokens by default. (\[[`8345030`](https://togithub.com/auth0/node-jsonwebtoken/commit/834503079514b72264fd13023a3b8d648afd6a16)]https://github.com/auth0/node-jsonwebtoken/commit/834503079514b72264fd13023a3b8d648afd6a16) - RSA key size must be 2048 bits or greater. (\[[`ecdf6cc`](https://togithub.com/auth0/node-jsonwebtoken/commit/ecdf6cc6073ea13a7e71df5fad043550f08d0fa6)]https://github.com/auth0/node-jsonwebtoken/commit/ecdf6cc6073ea13a7e71df5fad043550f08d0fa6) - Key types must be valid for the signing / verification algorithm ##### Security fixes - security: fixes `Arbitrary File Write via verify function` - CVE-2022-23529 - security: fixes `Insecure default algorithm in jwt.verify() could lead to signature validation bypass` - CVE-2022-23540 - security: fixes `Insecure implementation of key retrieval function could lead to Forgeable Public/Private Tokens from RSA to HMAC` - CVE-2022-23541 - security: fixes `Unrestricted key type could lead to legacy keys usage` - CVE-2022-23539

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