Update composer to support guzzlehttp/psr7 > 2.0

[xtremevision]

Trying to install the sdk in Magento 2.4.6 but I am getting version 0.6.0 which lacks a lot of classes. When trying to in stall version 19.1.0 I am getting a conflicts with guzzlehttps/psr7:

[root@localhost htdocs]# php81 composer.phar require benmorel/ebay-sdk-php:19.1.0
./composer.json has been updated
Running composer update benmorel/ebay-sdk-php
Loading composer repositories with package information
Updating dependencies
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Root composer.json requires benmorel/ebay-sdk-php 19.1.0 -> satisfiable by benmorel/ebay-sdk-php[19.1.0].
    - benmorel/ebay-sdk-php 19.1.0 requires guzzlehttp/psr7 ^1.0 -> found guzzlehttp/psr7[1.0.0, ..., 1.9.1] but the package is fixed to 2.6.1 (lock file version) by a partial update and that version does not match. Make sure you list it as an argument for the update command.

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Installation failed, reverting ./composer.json and ./composer.lock to their original content.

Please merge the PR so I can try reinstalling.

Thanks

[xtremevision]

...and of course publish a new version on packagist. Thanks.

[BenMorel]

Hi, sorry for the delay. ~I reverted the change of package name~ (actually left is as is, as you may be using your fork - next time please be careful to use another branch for your PR, without a package name change), and rebased. Many tests are failing, due to functions being removed in v2 of guzzlehttp/psr7.

I'll try to fix this.

[BenMorel]

Fixed in b1ef540b78ddb6a7bf1748cad51003bda2cb1003 and 57b5f3936c4e0281a841d23c67f45c10c24c67c5.

[BenMorel]

Released in 19.2.0.