update the codec for big decimal (#663) #2831

Job	Run time
lint	6m 25s
build ([email protected], 2.12.18, JVM)	5m 23s
build ([email protected], 2.12.18, Native)	28m 26s
build ([email protected], 2.12.18, JS)	18m 34s
build ([email protected], 2.13.12, JVM)	5m 32s
build ([email protected], 2.13.12, Native)	29m 8s
build ([email protected], 2.13.12, JS)	19m 39s
build ([email protected], 3.3.1, JVM)	2m 22s
build ([email protected], 3.3.1, Native)	10m 8s
build ([email protected], 3.3.1, JS)	3m 36s
build ([email protected], 2.12.18, JVM)	4m 57s
build ([email protected], 2.12.18, Native)	28m 7s
build ([email protected], 2.12.18, JS)	18m 7s
build ([email protected], 2.13.12, JVM)	5m 17s
build ([email protected], 2.13.12, Native)	28m 40s
build ([email protected], 2.13.12, JS)	18m 33s
build ([email protected], 3.3.1, JVM)	2m 13s
build ([email protected], 3.3.1, Native)	10m 7s
build ([email protected], 3.3.1, JS)	3m 21s
publish	0s
	4h 8m 35s

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