Bump serde_json from 1.0.119 to 1.0.120 #2102

Job	Run time
changes	2s
check-lockfile	6s
lint-crlf	5s
lint-newsfile	0s
lint-clippy	1m 11s
lint	0s
check-schema-delta	0s
check-sampleconfig	0s
Typechecking	0s
lint-clippy-nightly	1m 9s
lint-readme	0s
lint-pydantic	0s
lint-rustfmt	1m 17s
linting-done	4s
calculate-test-jobs	5s
trial-olddeps	8m 10s
portdb (3.8, 11)	2m 59s
cargo-bench	0s
portdb (3.11, 15)	2m 51s
cargo-test	0s
complement (monolith, SQLite)	12m 29s
trial-pypy	0s
complement (monolith, Postgres)	13m 33s
complement (workers, Postgres)	20m 53s
trial (3.8, sqlite, all)	5m 28s
sytest (focal)	9m 40s
trial (3.8, postgres, 11, all)	12m 16s
sytest (focal, postgres)	11m 30s
trial (3.8, sqlite)	5m 30s
sytest (focal, multi-postgres, workers)	14m 29s
sytest (focal, multi-postgres, workers, asyncio)	20m 8s
export-data	2m 12s
tests-done	1s
	2h 26m 8s

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