Add stderr_output: error to doc/config.yml #793

Job	Run time
Build macOS/x86 wheels (3.8)	6m 10s
Build source distribution	14s
Build macOS/x86 wheels (3.9)	7m 32s
Build macOS/x86 wheels (3.10)	7m 53s
Build macOS/x86 wheels (3.11)	6m 1s
Build and test Linux wheels (python3.8)	13m 42s
Build and test Linux wheels (python3.9)	14m 28s
Build and test Linux wheels (python3.10)	10m 37s
Build and test Linux wheels (python3.11)	14m 27s
Build package from source dist (3.8)	3m 29s
Build package from source dist (3.9)	3m 36s
Build package from source dist (3.10)	4m 33s
Build package from source dist (3.11)	6m 9s
Test macOS/x86 wheels (3.8)	35s
Test macOS/x86 wheels (3.9)	29s
Test macOS/x86 wheels (3.10)	43s
Test macOS/x86 wheels (3.11)	34s
Upload to PyPI	37s
	1h 41m 49s

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