Bump Carbon version for Laravel 5.8

[danielfaulknor]

Description

Laravel 5.8 comes with Carbon 2, so this change allows it to work with Carbon 1 or 2. According to the upgrade guide, there are no changes required for this package's current use of Carbon

Motivation and context

As above.

If it fixes an open issue, please link to the issue here (if you write fixes #num or closes #num, the issue will be automatically closed when the pull is accepted.)

How has this been tested?

I ran composer test etc as per contributing guidelines

Screenshots (if appropriate)

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

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[sandervanhooft]

Hi @danielfaulknor,

Thanks for the PR, you are right!

Can you modify it into this, so it's a bit more strict (and comparable to how the Laravel framework defines this dependency):

"nesbot/carbon": "^1.22 || ^2.0",

Cheers,

Sander

[sandervanhooft]

This PR will be included in the next major release.

[sandervanhooft]

Closing it for now.