chore: update issue assignment list (#29356)

This PR revises the list of who gets automatically assigned to issues.

Author: liamdebeasi

.github/workflows/assign-issues.yml

@@ -13,6 +13,6 @@ jobs:
       - name: 'Auto-assign issue'
         uses: pozil/auto-assign-issue@65947009a243e6b3993edeef4e64df3ca85d760c # v1.14.0
         with:
-          assignees: liamdebeasi, sean-perkins, brandyscarney, amandaejohnston, thetaPC
+          assignees: liamdebeasi, sean-perkins, brandyscarney, thetaPC
           numOfAssignee: 1
           allowSelfAssign: false