Rust

Bump dropshot from `32b50e1` to `b976695` #2242

Job	Run time
check-style	16s
check-generation	1m 25s
clippy-lint	3m 20s
build-and-test (ubuntu-22.04, all)	3m 7s
build-and-test (ubuntu-22.04, default)	3m 3s
build-and-test (windows-2022, all)	2m 50s
build-and-test (windows-2022, default)	2m 50s
build-and-test (macos-latest, all)	3m 3s
build-and-test (macos-latest, default)	2m 47s
	22m 41s

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