Add support for lcobucci/jwt 5

[erickskrauch]

This PR allows us to install it with lcobucci/jwt v5.

Description

It does what title says :) It also removes allowance of lcobucci/jwt v3 since it might be installed only on PHP ^7.0, but the library itself requires at least ^8.0.

Motivation and Context

On our project we use the latest version of the lcobucci/jwt, so we couldn't install the library without this fix.

How Has This Been Tested?

I have performed vendor/bin/phpunit for both 4 and 5 versions of lcobucci/jwt. No errors have been reported.

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.

[SecondeJK]

Apologies for the automatic closure: the timing was unfortunately really bad: #441 is literally the PR before this one and is about to be merged: it refactors the library to use the PHP JWT library (that uses 4.1 of lcobucci, but that dependency is now abstracted out so version upgrades will be easier)

[erickskrauch]

No problem. I hope support for v5 will be added soon. I'll keep my job project living on my fork for a while.

[SecondeJK]

I'll make a note to bump vonage/jwt up to jcobucci/jwt 5. It won't be -too- soon though because I want to support PHP8 for a little bit after security patches. Once this core library has it's next major release (possibly at the end of Q4 2023 or Q1 2024) I expect I'll drop it and bump up to v5

[Brenneisen]

@SecondeJK As a customer, we would like to see this library get more modern dependencies soon. A normal way in such situations would be a new major version with updates for PHP 8.3 support and lcobucci/jwt 5.2 support. Since Laravel also requires ramsey/uuid 4.7, this would also be necessary. You are restricting your customers with legacy dependencies and have no other option.