Bump semver from 1.0.17 to 1.0.18 #583

Job	Run time
check-juliaup (x86_64-pc-windows-msvc-windowsstore)	2m 51s
check-juliaup (x86_64-pc-windows-msvc-windowsappinstaller)	2m 36s
check-juliaup (x86_64-pc-windows-gnu-msi)	2m 58s
check-juliaup (x86_64-pc-windows-gnu-msi)	2m 45s
check-juliaup (x86_64-apple-darwin)	1m 57s
check-juliaup (x86_64-unknown-linux-gnu)	2m 27s
check-juliaup (x86_64-unknown-linux-musl)	3m 38s
check-juliaup (i686-pc-windows-msvc-windowsstore)	2m 36s
check-juliaup (i686-pc-windows-msvc-windowsappinstaller)	3m 6s
check-juliaup (i686-pc-windows-gnu-msi)	3m 8s
check-juliaup (i686-unknown-linux-gnu)	2m 36s
check-juliaup (i686-unknown-linux-musl)	3m 23s
check-juliaup (aarch64-unknown-linux-gnu)	3m 4s
check-juliaup (aarch64-unknown-linux-musl)	2m 47s
check-juliaup (aarch64-apple-darwin)	1m 50s
test-juliaup (x86_64-pc-windows-msvc)	10m 27s
test-juliaup (x86_64-pc-windows-gnu)	10m 9s
test-juliaup (x86_64-apple-darwin)	9m 16s
test-juliaup (x86_64-unknown-linux-gnu)	5m 7s
test-juliaup (x86_64-unknown-linux-musl)	6m 25s
test-juliaup (i686-pc-windows-msvc)	8m 53s
test-juliaup (i686-pc-windows-gnu)	17m 37s
	1h 49m 36s

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