Support guzzlehttp/psr7 3.x and Guzzle 8

[HecFranco]

Problem

sentry/sentry 4.29.0 requires guzzlehttp/psr7: ^1.8.4|^2.1.1, which conflicts with Guzzle 8 installs that pull guzzlehttp/psr7 3.x.

There is also a small runtime concern in GuzzleTracingMiddleware around GuzzleHttp\Exception\RequestException / getResponse() across Guzzle 7 vs 8.

Related

• Open PR: feat: add support for guzzlehttp/psr7 and guzzlehttp/promises 3.0 #2164
• Closed duplicate (ours): feat: add support for guzzlehttp/psr7 3.x and Guzzle 8 #2169
• Companion Symfony bundle PR: Add support for guzzlehttp/psr7 3.x (Guzzle 8 compatibility) sentry-symfony#1046

[linear-code]

PHP-90