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73038701 - Gemini 2.5 Pro is available in Copilot [GA] #18667 (#56643)

Gemini 2.5 Pro is available in Copilot [GA] #18667 (#56643) Co-authored-by: Kevin Heis <heiskr@users.noreply.github.com> Co-authored-by: Sunbrye Ly <56200261+sunbrye@users.noreply.github.com>