fix(deps): update rust crate serde_json to v1.0.121 #11

Job	Run time
release / Configure compilation targets	8s
release / get-next-version / Get next release version	6s
release / Test aarch64-unknown-linux-gnu	2m 1s
release / Test aarch64-unknown-linux-musl	2m 31s
release / (swiss-qr-bill-decoder, aarch64-apple-darwin)	2m 13s
release / Test i686-unknown-linux-gnu	1m 27s
release / (swiss-qr-bill-decoder, aarch64-unknown-linux-gnu)	1m 8s
release / Test i686-unknown-linux-musl	1m 29s
release / (swiss-qr-bill-decoder, aarch64-unknown-linux-musl)	1m 49s
release / Test x86_64-apple-darwin	42s
release / Test x86_64-unknown-linux-gnu	33s
release / (swiss-qr-bill-decoder, i686-unknown-linux-gnu)	1m 48s
release / Test x86_64-unknown-linux-musl	1m 0s
release / (swiss-qr-bill-decoder, i686-unknown-linux-musl)	1m 56s
release / (swiss-qr-bill-decoder, x86_64-apple-darwin)	1m 19s
release / (swiss-qr-bill-decoder, x86_64-unknown-linux-gnu)	1m 32s
release / (swiss-qr-bill-decoder, x86_64-unknown-linux-musl)	1m 40s
release / Release	50s
	24m 12s

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