Poetry: bump pytest and pytest-cov versions #762

Job	Run time
check	20s
Ubuntu / 3.12 regression tests	3m 3s
check_docs	46s
MacOS / 3.12 regression tests	2m 52s
Ubuntu / 3.8 unit tests	1m 29s
build_docs	2m 50s
Windows / 3.12 regression tests	6m 18s
Ubuntu / 3.9 unit tests	1m 19s
Ubuntu / 3.8 regression tests	2m 32s
Ubuntu / 3.10 unit tests	1m 26s
Ubuntu / 3.10 regression tests	2m 39s
Ubuntu / 3.11 unit tests	1m 18s
Ubuntu / 3.11 regression tests	2m 45s
Ubuntu / 3.12 unit tests	1m 16s
Ubuntu / 3.13.0-alpha - 3.13 unit tests	1m 33s
Ubuntu / 3.13.0-alpha - 3.13 regression tests	3m 4s
Ubuntu / pypy-3.9 unit tests	2m 6s
Ubuntu / pypy-3.9 regression tests	6m 21s
MacOS / 3.8 unit tests	1m 17s
Ubuntu / 3.12 regression tests (docutils)	5m 28s
MacOS / 3.9 unit tests	45s
Ubuntu / 3.12 regression tests (Sphinx)	9m 5s
MacOS / 3.10 unit tests	44s
Ubuntu / 3.9 regression tests (Sphinx)	1m 12s
MacOS / 3.11 unit tests	46s
MacOS / 3.12 unit tests	53s
MacOS / 3.13.0-alpha - 3.13 unit tests	1m 28s
MacOS / pypy-3.9 unit tests	1m 48s
Windows / 3.8 unit tests	2m 30s
Windows / 3.9 unit tests	2m 36s
Windows / 3.10 unit tests	2m 29s
Windows / 3.11 unit tests	2m 41s
Windows / 3.12 unit tests	3m 23s
Windows / 3.13.0-alpha - 3.13 unit tests	2m 47s
Windows / pypy-3.9 unit tests	4m 0s
Ubuntu / 3.12 unit tests (Sphinx)	6m 26s
Ubuntu / 3.9 unit tests (Sphinx)	1m 19s
Update docs versions JSON	10s
check-tag	0s
publish-release	0s
publish-develop	0s
	1h 35m 44s

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