Do not test GSL for now #781

Job	Run time
Run linters with pre-commit	1m 23s
Determine Python versions	5s
Test building the documentation	2m 32s
Python 3.11 on ubuntu-20.04 (standalone: false, 32bit: false)	40m 46s
Python 3.11 on ubuntu-20.04 (standalone: false, 32bit: true)	43m 22s
Python 3.11 on ubuntu-20.04 (standalone: true, 32bit: false)	42m 53s
Python 3.11 on ubuntu-20.04 (standalone: true, 32bit: true)	41m 29s
Python 3.11 on windows-2019 (standalone: false, 32bit: false)	1h 13m 1s
Python 3.11 on windows-2019 (standalone: false, 32bit: true)	1h 13m 4s
Python 3.11 on windows-2019 (standalone: true, 32bit: false)	37m 25s
Python 3.11 on windows-2019 (standalone: true, 32bit: true)	42m 10s
Python 3.11 on macOS-11 (standalone: false, 32bit: false)	41m 34s
Python 3.11 on macOS-11 (standalone: false, 32bit: true)	50m 58s
Python 3.11 on macOS-11 (standalone: true, 32bit: false)	34m 49s
Python 3.11 on macOS-11 (standalone: true, 32bit: true)	16m 15s
Python 3.9 on ubuntu-20.04 (standalone: false, 32bit: false)	34m 28s
Python 3.9 on ubuntu-20.04 (standalone: true, 32bit: false)	36m 4s
Indicate completion to coveralls.io	1s
	10h 12m 19s

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