Rust

Bump dropshot from `115dd34` to `203bff4` #2165

Job	Run time
clippy-lint	3m 15s
check-style	13s
check-generation	1m 21s
build-and-test (ubuntu-22.04, all)	4m 32s
build-and-test (ubuntu-22.04, default)	4m 28s
build-and-test (windows-2022, all)	8m 27s
build-and-test (windows-2022, default)	9m 8s
build-and-test (macos-12, all)	4m 19s
build-and-test (macos-12, default)	4m 35s
	40m 18s

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