Build(deps): Bump serde_json from 1.0.138 to 1.0.139 #6440

Job	Run time
Check	19s
Check if cbindgen runs cleanly for generating the C headers	29s
coverage	1m 45s
Lints (beta)	31s
minimum_rust_version	48s
Lints (stable)	32s
test (beta)	54s
test_all_features	2m 14s
test (stable)	53s
Publish (on tags, dry-run otherwise)	8m 26s
Check if wasm-pack builds a valid package for the sourmash crate	44s
test (windows)	3m 18s
test (macos)	1m 19s
	22m 12s

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