build

Pin tox and uv versions, to fix CI #56

Job	Run time
test (macos-latest, 3.8, py38)	32s
test (macos-latest, 3.9, py39)	10s
test (macos-latest, 3.10, py310)	9s
test (macos-latest, 3.11, py311)	8s
test (macos-latest, 3.12, py312)	29s
test (macos-latest, pypy3.8, pypy38)	27s
test (macos-latest, pypy3.9, pypy39)	17s
test (macos-latest, pypy3.10, pypy310)	20s
test (windows-latest, 3.8, py38)	53s
test (windows-latest, 3.9, py39)	19s
test (windows-latest, 3.10, py310)	34s
test (windows-latest, 3.11, py311)	52s
test (windows-latest, 3.12, py312)	2m 47s
test (windows-latest, pypy3.8, pypy38)	56s
test (windows-latest, pypy3.9, pypy39)	40s
test (windows-latest, pypy3.10, pypy310)	1m 18s
test (ubuntu-latest, 3.8, py38)	15s
test (ubuntu-latest, 3.9, py39)	7s
test (ubuntu-latest, 3.10, py310)	8s
test (ubuntu-latest, 3.11, py311)	7s
test (ubuntu-latest, 3.12, py312)	15s
test (ubuntu-latest, pypy3.8, pypy38)	9s
test (ubuntu-latest, pypy3.9, pypy39)	21s
test (ubuntu-latest, pypy3.10, pypy310)	41s
test (ubuntu-latest, 3.8, codestyle)	6s
test (ubuntu-latest, 3.8, lint)	17s
test (ubuntu-latest, 3.8, typecheck)	11s
	13m 28s

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