Bump serde from 1.0.213 to 1.0.214 #3743

Job	Run time
check-lockfile	8s
changes	2s
lint-crlf	4s
lint-newsfile	0s
lint	0s
check-schema-delta	0s
check-sampleconfig	0s
lint-clippy	2m 3s
Typechecking	0s
lint-clippy-nightly	2m 10s
lint-pydantic	0s
lint-readme	0s
lint-rustfmt	1m 46s
linting-done	2s
calculate-test-jobs	7s
cargo-bench	0s
cargo-test	0s
complement (monolith, SQLite)	13m 43s
portdb (3.8, 11)	3m 28s
complement (monolith, Postgres)	14m 28s
trial-olddeps	9m 24s
complement (workers, Postgres)	21m 16s
portdb (3.11, 15)	3m 18s
trial-pypy	0s
sytest (focal)	9m 25s
trial (3.8, sqlite, all)	6m 50s
sytest (focal, postgres)	11m 5s
trial (3.8, postgres, 11, all)	14m 44s
trial (3.8, sqlite)	6m 9s
sytest (focal, multi-postgres, workers)	13m 56s
sytest (focal, multi-postgres, workers, asyncio)	19m 44s
export-data	2m 20s
tests-done	2s
	2h 36m 14s

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