Bump PHPUnit to ^11.5.32 with all dependencies for testing with PHP 8.5

Problem/Motivation

There are quite some deprecations reported in unit tests logs when test run under PHP 8.5.

Apart from Drupal code deprecations, lots seems related to PHPUnit and its dependnecies themselves.

Steps to reproduce

Look at PHP 8.5 test jobs in CI

Proposed resolution

Bump PHPUnit to ^11.5.32 with all dependencies.

Remaining tasks

User interface changes

Introduced terminology

API changes

Data model changes

Release notes snippet