Leaves all investigations that the user is part of (Clears the left pane) (#3381)
Leaves all investigations that the user is part of (Clears the left pane) (#3381)

* Leaves all investigations that the user is part of

* Update Scripts/script-DemistoLeaveAllInvestigations.yml

* Update Scripts/script-DemistoLeaveAllInvestigations.yml

* Update Scripts/script-DemistoLeaveAllInvestigations.yml

* fix comment, release notes and tests sections

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