v3.2.3

This maintenance release updates PHPUnit, repairs coverage reporting and gives the examples a consistent directory name. There are no changes to the library's runtime code.

• 3667de84 Update phpunit/phpunit from 12.5.14 to 12.5.22.
• 65642bd1 Rename the examples directory for consistency.
• 327d19f6 Repair code coverage reporting.
• fd63a520 Update Codecov configuration.