Update @github/copilot to 1.0.71-0 (#1968) #1711

Job	Run time
Rust SDK Tests (ubuntu-latest, default)	7m 54s
Rust SDK Tests (macos-latest, inprocess)	10m 12s
Rust SDK Tests (ubuntu-latest, inprocess)	13m 42s
Rust SDK Bundled CLI Build (windows-latest)	4m 26s
Rust SDK Tests (windows-latest, default)	12m 15s
Rust SDK Bundled CLI Build (ubuntu-latest)	2m 48s
Rust SDK Bundled CLI Build (macos-latest)	2m 14s
Rust SDK Tests (macos-latest, default)	6m 24s
	59m 55s

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