Updated dependencies: Allow any Guzzle 7.* version

Allow PHP 8.3, require at least PHP 8.2

Allow PHP 8.2

Add Monolog to Composer require-dev dependencies.

Add support for activityIdIn in ProcessInstanceGetList.
Add ProcessInstanceHistoryGet.

Allow PHP 8.1. Fix dependency on old Guzzle version affected by CVE-2…

…022-31091.

Allow PHP 8.0 and Guzzle 7.3 in dependencies.

Add CamundaProcessInstanceVariablesService and CamundaProcessInstanceService::get().
Log HTTP method and URI for Camunda requests.

Add support for correlating a message

Log API requests, add CamundaCollectionVariable

Important CamundaExternalTaskWorker fix

New functionality: CamundaProcessInstanceService::getList() and ::del…

…ete()