[TASK] Update to Guzzle 7.3.0 and guzzlehttp/psr7 2.0

Our dependency guzzlehttp/psr7 is raised to 2.0,
however "LazyOpenStream" is now final, and that's
why we need to change our "SelfEmittableLazyOpenStream"
to become a decorator of the LazyOpenStream.

Used composer commands:

composer req guzzlehttp/guzzle:^7.3.0 guzzlehttp/psr7:^2.0
composer req guzzlehttp/guzzle:^7.3.0 guzzlehttp/psr7:^2.0 -d typo3/sysext/core --no-update

Resolves: #94454
Releases: master
Change-Id: Ica487d9bb04bf344e3d763fa83d561e2771afd21
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/70437


Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>