Bump rstest from 0.22.0 to 0.23.0 in /lang/rust #3135

Job	Run time
ci (stable, x86_64-unknown-linux-gnu)	4m 35s
web-assembly	1m 23s
ci (stable, wasm32-unknown-unknown)	1m 24s
interop	5m 7s
ci (beta, x86_64-unknown-linux-gnu)	3m 21s
ci (beta, wasm32-unknown-unknown)	1m 41s
ci (nightly, x86_64-unknown-linux-gnu)	2m 57s
ci (nightly, wasm32-unknown-unknown)	1m 30s
ci (1.73.0, x86_64-unknown-linux-gnu)	3m 49s
ci (1.73.0, wasm32-unknown-unknown)	1m 35s
	27m 22s

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