chore(rust): bump nightly to 1.94.0 #676

Job	Run time
detect-changes	7s
Format and Check Deps	1m 59s
Test (macos-latest, x86_64-apple-darwin)	8m 33s
Test (windows-latest, x86_64-pc-windows-msvc)	10m 19s
Test (ubuntu-latest, x86_64-unknown-linux-gnu)	5m 40s
Test (macos-latest, aarch64-apple-darwin)	4m 26s
done	3s
	31m 7s

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