Updating org chart to report to SEM, CD

Why is this change being made?

Org structure renders a bit oddly but EMs should report into @crystalpoole but a placeholder is left for the SEM, CD Vacancy.

/cc @sgoldstein

Author Checklist

• Provided a concise title for this Merge Request (MR)
• Added a description to this MR explaining the reasons for the proposed change, per say why, not just what
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