Switch from pip to uv, during tox #30

Job	Run time
test (macos-latest, 3.8, py38)	25s
test (macos-latest, 3.9, py39)	38s
test (macos-latest, 3.10, py310)	25s
test (macos-latest, 3.11, py311)	24s
test (macos-latest, 3.12, py312)	25s
test (macos-latest, pypy3.8, pypy38)	49s
test (macos-latest, pypy3.9, pypy39)	52s
test (macos-latest, pypy3.10, pypy310)	46s
test (windows-latest, 3.8, py38)	53s
test (windows-latest, 3.9, py39)	48s
test (windows-latest, 3.10, py310)	53s
test (windows-latest, 3.11, py311)	51s
test (windows-latest, 3.12, py312)	59s
test (windows-latest, pypy3.8, pypy38)	41s
test (windows-latest, pypy3.9, pypy39)	57s
test (windows-latest, pypy3.10, pypy310)	46s
test (ubuntu-latest, 3.8, py38)	16s
test (ubuntu-latest, 3.9, py39)	17s
test (ubuntu-latest, 3.10, py310)	13s
test (ubuntu-latest, 3.11, py311)	13s
test (ubuntu-latest, 3.12, py312)	14s
test (ubuntu-latest, pypy3.8, pypy38)	35s
test (ubuntu-latest, pypy3.9, pypy39)	36s
test (ubuntu-latest, pypy3.10, pypy310)	39s
test (ubuntu-latest, 3.8, codestyle)	14s
test (ubuntu-latest, 3.8, lint)	10s
test (ubuntu-latest, 3.8, typecheck)	16s
	15m 15s

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