Mitigate impact of changing master to main

@edburns requested branch **master** rename to **main** before proper notification.

https://gitlab.eclipse.org/eclipsefdn/helpdesk/-/issues/3122

This issue seeks to identify collect, and track the mitigation of anything that breaks as a result of this change.

[AB#48](https://dev.azure.com/jakarta-ee-azdo/7cf9a9d3-9854-41e0-9a66-99506a9ed874/_workitems/edit/48)

Start by reviewing the linked Eclipse Foundation helpdesk issue 3122 and Azure Boards work item AB#48, then inspect the repository workflows and references affected by the master-to-main rename. Done means the resulting breakages are identified, collected, and tracked with mitigation status; the issue does not name specific files or tests.

Written by the indexing model from the issue text.