Set retention-days for artifacts #203

Job	Run time
deps-linux (x64-linux)	27s
deps-macos (x64-osx)	27s
deps-windows (x64-windows-static-md)	54s
deps-macos (arm64-osx)	23s
deps-windows (x86-windows-static-md)	53s
deps-windows (x64-windows-static)	56s
deps-windows (x86-windows-static)	19s
build-macos (x64-osx, x86_64)	6m 11s
build-macos (arm64-osx, arm64)	3m 56s
macos-ninja-clang-arm64	3m 36s
macos-ninja-clang-x86_64	5m 43s
build-linux (x64-linux)	9m 22s
ubuntu-ninja-clang-x86_64	7m 27s
ubuntu-make-gcc-x86_64	15m 6s
windows-ninja-clang-x86-64	7m 58s
windows-vs-clangcl-x86_64	14m 43s
build-windows (x64-windows-static-md, x64)	9m 25s
windows-vs-x86	16m 33s
build-windows (x86-windows-static-md, x86, -m32)	9m 39s
build-windows (x64-windows-static, x64)	10m 36s
build-windows (x86-windows-static, x86, -m32)	10m 59s
usage-macos (x64-osx)	1m 20s
usage-macos (arm64-osx)	1m 3s
usage-linux (x64-linux)	2m 12s
usage-windows (x64-windows-static-md)	3m 34s
usage-windows (x86-windows-static-md)	3m 0s
upload-release	0s
usage-windows (x64-windows-static)	2m 38s
usage-windows (x86-windows-static)	3m 33s
	2h 32m 53s

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