Backport of fix spacing of bash scripts into release/1.19.x #17879

Job	Run time
Setup	6s
get-go-version / Determine Go toolchain version	6s
check-go-mod / check-go-mod	1m 0s
build-amd64	3m 3s
build-386	2m 1s
build-arm	3m 9s
build-s390x	0s
build-distros-success	1s
	9m 26s

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