Add Copilot instructions for release PRs #10019

Job	Run time
check-codeql-versions	37s
analyze-actions	1m 1s
analyze-javascript (ubuntu-24.04, linked)	3m 57s
analyze-javascript (windows-2022, linked)	6m 26s
analyze-javascript (windows-2025, linked)	6m 5s
analyze-javascript (ubuntu-24.04)	3m 55s
analyze-javascript (windows-2025)	5m 54s
analyze-javascript (macos-13)	9m 55s
analyze-javascript (windows-2022)	6m 15s
analyze-javascript (ubuntu-22.04, linked)	4m 6s
analyze-javascript (ubuntu-22.04)	4m 11s
analyze-javascript (macos-14, linked)	4m 31s
analyze-javascript (macos-13, linked)	8m 51s
analyze-javascript (macos-14)	6m 49s
analyze-javascript (macos-15)	5m 44s
analyze-javascript (macos-15, linked)	6m 35s
	1h 24m 52s

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