Bump pytest-mock from 3.11.1 to 3.12.0 #750

Job	Run time
build_windows (windows-latest, 3.9)	1m 49s
build (ubuntu-20.04, 3.9)	1m 56s
build_windows (windows-latest, 3.10)	1m 52s
build (ubuntu-20.04, 3.10)	2m 6s
build_windows (windows-latest, 3.11)	2m 19s
build (ubuntu-20.04, 3.11)	2m 28s
build (ubuntu-22.04, 3.9)	2m 21s
build (ubuntu-22.04, 3.10)	1m 49s
build (ubuntu-22.04, 3.11)	2m 9s
build (macos-latest, 3.9)	2m 27s
build (macos-latest, 3.10)	2m 8s
build (macos-latest, 3.11)	3m 13s
notify-complete	5s
deploy	0s
	26m 42s

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