chore: update guzzlehttp/guzzle & illuminate/support

[repat]

Summary

What changes are being made?

• Updated illuminate/support to ^8.0 (8.3 currently)
• Updated guzzlehttp/guzzle to ^7.0 (7.0 currently)

Why are these changes necessary?

I would like to use this package with Laravel 8.X

$ composer require arkecosystem/client
Using version ^1.2 for arkecosystem/client
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Can only install one of: guzzlehttp/guzzle[7.0.1, 6.5.x-dev].
    - Can only install one of: guzzlehttp/guzzle[6.5.x-dev, 7.0.1].
    - Can only install one of: guzzlehttp/guzzle[6.5.x-dev, 7.0.1].
    - arkecosystem/client 1.2.0 requires guzzlehttp/guzzle ^6.5 -> satisfiable by guzzlehttp/guzzle[6.5.x-dev].
    - Installation request for arkecosystem/client ^1.2 -> satisfiable by arkecosystem/client[1.2.0].
    - Installation request for guzzlehttp/guzzle (locked at 7.0.1, required as ^7.0.1) -> satisfiable by guzzlehttp/guzzle[7.0.1].

How were these changes implemented?

Just updated the composer.json, composer install'ed and ran the tests with ./vendor/bin/phpunit

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

Gone through the Guzzle Upgrade Guide and couldn't find any problems.

Left to do

• Changelog
• Create release

[ghost]

Thanks for submitting this pull request! A maintainer will review this in the next few days and explicitly select labels so you know what's going on.

If no reviewer appears after a week, a reminder will be sent out.

[codecov]

Codecov Report

Merging #92 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #92   +/-   ##
=========================================
  Coverage     90.84%   90.84%           
  Complexity       66       66           
=========================================
  Files            14       14           
  Lines           142      142           
=========================================
  Hits            129      129           
  Misses           13       13           

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[ghost]

A contributor has approved this PR. A maintainer will merge this PR shortly. If it shouldn't be merged yet, please leave a comment saying so and we'll wait.

Thank you for your contribution!

[ghost]

Your pull request has been merged. Thank you for your contribution to the ARK Ecosystem.