Fix: Update to handle single team returned from "create team" request

[bethesque]

The "create team" endpoint was originally written to return an array of teams. It has been updated to return the newly created team, but still returns the list of teams AS WELL because the terraform client relies on this behaviour. To allow us to delete the teams array from the "create team" response, the terraform client needs to be updated to use the new single team object.

This will be a "breaking change" in that it will not work with Pactflow onprem versions released prior to October 2023.

[github-actions]

👋 Hi! The 'smartbear-supported' label has just been added to this issue, which will create an internal tracking ticket in PactFlow's Jira (PACT-1362). We will use this to prioritise and assign a team member to this task. All activity will be public on this ticket. For now, sit tight and we'll update this ticket once we have more information on the next steps.

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