Bump serde from 1.0.216 to 1.0.217 #8453

Job	Run time
build (ubuntu-latest, nightly)	3m 9s
build (ubuntu-latest, stable)	2m 57s
build-linux-arm (nightly)	18m 27s
build-apple-x86 (nightly)	2m 24s
build (ubuntu-latest, 1.70)	3m 2s
build-linux-musl (nightly)	4m 11s
build-linux-arm (stable)	18m 44s
build-apple-x86 (stable)	2m 25s
build (macos-latest, nightly)	2m 57s
build-linux-musl (stable)	4m 10s
build-linux-arm (1.70)	18m 55s
build-apple-x86 (1.70)	3m 46s
build (macos-latest, stable)	2m 53s
build-linux-musl (1.70)	4m 39s
build (macos-latest, 1.70)	3m 34s
Lints	38s
build (windows-latest, nightly)	28m 2s
Changelog Test	4s
udeps	2m 14s
build (windows-latest, stable)	30m 4s
build (windows-latest, 1.70)	28m 22s
	3h 5m 37s

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