Merge pull request #949 from quartiq/dependabot/cargo/serde-1.0.210 #4464

Job	Run time
style	1m 27s
hitl-trigger	0s
compile (stable, false)	1m 20s
doc	4m 17s
compile (beta, true)	1m 13s
compile (nightly, nightly, true)	1m 16s
	9m 33s

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