feat: rename "Zeebe user task" to "Camunda user task"

Related to camunda/camunda-modeler#4749

Author: Skaiir

src/contextProvider/zeebe/TooltipProvider.js

@@ -70,7 +70,7 @@ const TooltipProvider = {
 
     return (
       <div>
-        { translate('Implement a user task managed by Zeebe. To add a custom implementation, use a job worker. ')}
+        { translate('Implement a user task managed by Camunda. To add a custom implementation, use a job worker. ')}
         <a href="https://docs.camunda.io/docs/components/modeler/bpmn/user-tasks/#define-a-user-task" target="_blank" rel="noopener noreferrer" title={ translate('User task documentation') }>
           { translate('Learn more.') }
         </a>

src/provider/zeebe/properties/UserTaskImplementationProps.js

@@ -76,7 +76,7 @@ function UserTaskImplementation(props) {
   const getOptions = () => {
 
     const options = [
-      { value: ZEEBE_USER_TASK_IMPLEMENTATION_OPTION, label: translate('Zeebe user task') },
+      { value: ZEEBE_USER_TASK_IMPLEMENTATION_OPTION, label: translate('Camunda user task') },
       { value: JOB_WORKER_IMPLEMENTATION_OPTION, label: translate('Job worker') }
     ];