feat(api): add ListMixin to ProjectMergeRequestDiscussionNoteManager

feat(api): add ListMixin to ProjectMergeRequestDiscussionNoteManager · python-gitlab/python-gitlab@865339a

Original file line number	Diff line number	Diff line change
`@@ -164,10 +164,7 @@ class ProjectMergeRequestDiscussionNote(SaveMixin, ObjectDeleteMixin, RESTObject`
`164`	`164`
`165`	`165`
`166`	`166`	`class ProjectMergeRequestDiscussionNoteManager(`
`167`		`-GetMixin[ProjectMergeRequestDiscussionNote],`
`168`		`-CreateMixin[ProjectMergeRequestDiscussionNote],`
`169`		`-UpdateMixin[ProjectMergeRequestDiscussionNote],`
`170`		`-DeleteMixin[ProjectMergeRequestDiscussionNote],`
	`167`	`+CRUDMixin[ProjectMergeRequestDiscussionNote]`
`171`	`168`	`):`
`172`	`169`	`_path = (`
`173`	`170`	`"/projects/{project_id}/merge_requests/{mr_iid}/"`