Update pytest option from -rA to --report-chars=A once available

[coderabbitai]

Description

Update the pytest option in integration-tests/.pytest.ini from -rA to the more readable --report-chars=A once a pytest release includes the feature from pytest PR pytest-dev/pytest#14024.

Context

• Current file: integration-tests/.pytest.ini
• Related PR: feat(integration-tests): Add fixtures and tests for starting and stopping CLP packages. #1437
• Comment: feat(integration-tests): Add fixtures and tests for starting and stopping CLP packages. #1437 (comment)

Task

Monitor pytest releases and update the option to the long-form --report-chars=A when available.

Requester

@junhaoliao