Polish for linters

Confluence: add collaborative editing methods

Jira ServiceDesk: Fix create attachment (atlassian-api#1121)

* Jira ServiceDesk: Fix create attachment
In service_desk.py/attach_temporary_file a check was added
to successfully post the request.

* Corrected formatting with black of service_desk.py

* undid wrong black formatting

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Co-authored-by: Simon Kropf <[email protected]>

Added get_dashboard method (atlassian-api#1109)

* Added request_current_index_from_node method and docs for the cluster methods

* Added description to docs for method get_cluster_all_nodes

* Added get_dashboard method. Ability to get dashboard by ID.

* Fix resource_url for get_dashboard method

Bump version and adjust docs

Bump version to 3.31.0

bump version

Bump version

Polish code

Bump version: Jira plugin methods, rest client fix errors