Bump serde from 1.0.196 to 1.0.197 (#571) #64

Job	Run time
set-image	1s
clippy	1m 41s
bench-rust-nightly (bit-vec)	18m 21s
miri (bit-vec)	49m 48s
bench-rust-nightly (bytes)	17m 27s
checks	1m 37s
miri (bytes)	3m 6s
bench-rust-nightly (generic-array)	17m 3s
miri (generic-array)	2m 49s
bench-rust-nightly (derive)	17m 13s
miri (arbitrary)	3m 4s
tests	3m 8s
bench-rust-nightly (max-encoded-len)	17m 20s
build-linux-ubuntu-amd64	1m 22s
publish-dry-run	1m 12s
	2h 35m 12s

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