The PHP version constraint was incorrect, and the other dev-deps were unnecessarily low, which will cause issues for PHP 8.2 compatibility (coming in a follow-up PR). FYI, Guzzle 6 is approaching EOL, and I would not recommend using anything other than the latest version of Guzzle 7, since earlier versions have security vulnerabilities, or don't deny installation of transitive dependencies which have security vulnerabilities (I am co-maintainer of Guzzle).
Checklist
[x] I acknowledge that all my contributions will be made under the project's license
[ ] I have made a material change to the repo (functionality, testing, spelling, grammar)
Fixes
The PHP version constraint was incorrect, and the other dev-deps were unnecessarily low, which will cause issues for PHP 8.2 compatibility (coming in a follow-up PR). FYI, Guzzle 6 is approaching EOL, and I would not recommend using anything other than the latest version of Guzzle 7, since earlier versions have security vulnerabilities, or don't deny installation of transitive dependencies which have security vulnerabilities (I am co-maintainer of Guzzle).
Checklist
If you have questions, please file a support ticket, or create a GitHub Issue in this repository.