Add Copilot instructions for release PRs #5330

Job	Run time
Go: tracing with legacy workflow (macos-latest, stable-v2.17.6)	3m 16s
Go: tracing with legacy workflow (macos-latest, stable-v2.20.7)	4m 26s
Go: tracing with legacy workflow (ubuntu-latest, stable-v2.19.4)	1m 28s
Go: tracing with legacy workflow (macos-latest, stable-v2.18.4)	3m 58s
Go: tracing with legacy workflow (ubuntu-latest, stable-v2.21.4)	1m 25s
Go: tracing with legacy workflow (ubuntu-latest, stable-v2.20.7)	1m 24s
Go: tracing with legacy workflow (macos-latest, stable-v2.21.4)	3m 33s
Go: tracing with legacy workflow (ubuntu-latest, linked)	1m 17s
Go: tracing with legacy workflow (macos-latest, stable-v2.19.4)	3m 41s
Go: tracing with legacy workflow (ubuntu-latest, default)	1m 17s
Go: tracing with legacy workflow (macos-latest, linked)	4m 39s
Go: tracing with legacy workflow (ubuntu-latest, stable-v2.17.6)	1m 23s
Go: tracing with legacy workflow (macos-latest, default)	3m 9s
Go: tracing with legacy workflow (macos-latest, nightly-latest)	3m 11s
Go: tracing with legacy workflow (ubuntu-latest, nightly-latest)	1m 20s
Go: tracing with legacy workflow (ubuntu-latest, stable-v2.18.4)	1m 27s
	40m 54s

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