Bump chrono from 0.4.38 to 0.4.39 #1122

Job	Run time
sanity / Test documentation	3m 45s
sanity / Clippy	3m 56s
sanity / Check	2m 55s
sanity / Validate commit messages	5s
sanity / Rustfmt	7s
sanity / Sort dependencies	25s
sanity / Unused dependencies	51s
build and test macOS-aarch64	2m 15s
build and test Linux-x86_64-musl	5m 17s
build Windows-x86_64	4m 21s
backwards_compatibility / check_commit_message	3s
backwards_compatibility / build_and_test	1m 46s
finalize_pr	1s
	25m 47s

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