Review permissions for "Add Update Label Weekly" workflow

[t-will-gillis]

Overview

We need to audit each of our workflows to identify exactly what permissions are needed at each level of the workflow, i.e. overall, job-level, and step-level.

Action Items

• For add-update-label-weekly.yml, test default level permissions by adding:

  permissions:
    contents: read
  

Resources/Instructions

• initiated by epic Check affect of changing default workflow permissions to match GitHub's security recommendations #8178

[HackforLABot]

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