Update users stream of Jira source to use correct endpoint and query param

[cjwooo]

What

Jira Source is fetching empty results for the users stream. This is due to it not using the correct V3 Jira endpoint. See this Atlassian forum post, answered by their staff, which describes the issue: https://community.developer.atlassian.com/t/how-to-access-jira-core-feature-in-jira-cloud-app/31839/11.

How

Update the specification of the users stream to use the correct V3 endpoint and an empty query param. The param is required, even though the value is empty. I am not sure if I put the param in the correct spot in the code.

Recommended reading order

1. x.java
2. y.python

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[tuliren]

Nice catch. Thanks.