crossbuild: centos7 doesn't support node>16 #367

Job	Run time
pre-ci	5s
v3.2.x-gh-ubuntu20-linux-gcc-lean	3m 56s
v3.2.x-gh-ubuntu20-linux-gcc	3m 22s
v3.2.x-gh-ubuntu20-linux-gcc-reproducible	2m 24s
v3.2.x-gh-ubuntu20-linux-gcc-O2-g3	2m 39s
v3.2.x-gh-ubuntu20-linux-clang-lean	4m 51s
v3.2.x-gh-ubuntu20-linux-clang	7m 16s
v3.2.x-gh-ubuntu20-linux-clang-altlibs	6m 45s
v3.2.x-gh-ubuntu20-linux-clang-reproducible	6m 12s
v3.2.x-gh-ubuntu20-linux-clang-sanitizer	6m 28s
v3.2.x-gh-ubuntu20-linux-clang-O2-g3	5m 45s
Merge preflight	1s
Merge into upstream	0s
	49m 44s

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