nauty: update to 2.9.3. #65956

Job	Run time
Build packages (armv6l-musl, x86_64-musl, musl, linux/amd64, 0)	3m 23s
Build packages (i686, i686, glibc, linux/386, 1)	3m 54s
Build packages (x86_64-musl, x86_64-musl, musl, linux/amd64, 1)	4m 17s
Build packages (x86_64, x86_64, glibc, linux/amd64, 1)	4m 26s
Build packages (aarch64-musl, x86_64-musl, musl, linux/amd64, 0)	4m 45s
Build packages (armv7l, x86_64, glibc, linux/amd64, 0)	3m 7s
Build packages (aarch64, x86_64, glibc, linux/amd64, 0)	4m 0s
Lint templates	49s
	28m 41s

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