tests

Fix colorspace signature #1165

Job	Run time
py-3.8 lib-6.1 ubuntu-latest	5m 20s
py-3.8 lib-6.0 ubuntu-latest	4m 16s
style	21s
py-3.8 lib-6.1 windows-latest	3m 17s
py-3.8 lib-5.1 ubuntu-latest	4m 37s
py-3.8 lib-6.0 windows-latest	3m 9s
py-3.8 lib-5.0 ubuntu-latest	4m 25s
package-wheel (macos-latest, arm64)	14m 39s
package-source	19s
py-3.8 lib-5.1 windows-latest	3m 24s
py-pypy3.9 lib-6.1 ubuntu-latest	4m 39s
py-3.8 lib-5.0 windows-latest	3m 51s
py-3.8 lib-6.1 macos-latest	17m 22s
package-wheel (macos-latest, x86_64)	26m 15s
package-wheel (ubuntu-latest, aarch64)	3h 26m 15s
package-wheel (ubuntu-latest, i686)	22m 11s
package-wheel (ubuntu-latest, x86_64)	21m 52s
package-wheel (windows-latest, AMD64)	15m 49s
publish	47s
	6h 2m 48s

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