Bump google.golang.org/grpc from 1.53.0 to 1.56.3 in /ruledocsgen #977

Job	Run time
run-determination	2s
check-errors (./)	52s
check-errors (docsgen)	45s
check-errors (ruledocsgen)	56s
check-config (./)	29s
check-config (docsgen)	30s
check-config (ruledocsgen)	34s
check-formatting (./)	21s
check-outdated (./)	31s
check-formatting (docsgen)	19s
check-outdated (docsgen)	36s
check-style (./)	32s
check-formatting (ruledocsgen)	26s
check-outdated (ruledocsgen)	27s
check-style (docsgen)	30s
check-style (ruledocsgen)	27s
	8m 17s

Provide feedback