Fix CI scripts not creating the header-only zip correctly #384

Job	Run time
Ubuntu GCC Release	3m 8s
Ubuntu GCC Debug	1m 36s
Ubuntu GCC noexcept Release	1m 12s
Ubuntu GCC noexcept Debug	51s
Ubuntu GCC notime Release	1m 31s
Ubuntu GCC notime Debug	55s
Ubuntu GCC nounity Release	2m 15s
Ubuntu GCC nounity Debug	1m 23s
Ubuntu GCC header-only Release	1m 58s
Ubuntu GCC header-only Debug	1m 11s
Ubuntu GCC shared Release	2m 1s
Ubuntu GCC shared Debug	57s
Ubuntu Clang Release	1m 22s
Ubuntu Clang Debug	1m 10s
Ubuntu Clang noexcept Release	1m 13s
Ubuntu Clang noexcept Debug	1m 2s
Windows 32 Release	3m 55s
Windows 32 Debug	2m 14s
Windows 64 Release	5m 22s
Windows 64 Debug	1m 33s
Windows 64 noexcept Release	3m 54s
Windows 64 noexcept Debug	1m 54s
Windows 64 shared Release	5m 39s
Windows 64 shared Debug	2m 25s
MacOS Release	2m 28s
MacOS Debug	1m 53s
MacOS noexcept Release	2m 21s
MacOS noexcept Debug	1m 31s
WebAssembly Release	4m 56s
WebAssembly Debug	2m 4s
WebAssembly noexcept Release	1m 39s
WebAssembly noexcept Debug	1m 14s
	1h 8m 47s

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