Update Trusted Advisor CoP Lead Facilitors

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Adding Chloe Cartron and Cailey Pawlowski as lead facilitators for the Trusted Advisor Community of Practice. Chloe and Cailey are kickstarting a bookclub that aligns with the Trusted Advisor CoP -- see here: https://gitlab.com/gitlab-com/books-clubs/combined-book-clubs/-/issues/51

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