ci: Use `uv` in CI #7681

Job	Run time
Get database engines	5s
Get Docker tags	18s
Test 3.8/ ubuntu-latest	29s
Test 3.9/ ubuntu-latest	26s
Test 3.10/ ubuntu-latest	26s
Test 3.11/ ubuntu-latest	25s
Test 3.12/ ubuntu-latest	32s
Test pypy3.10/ ubuntu-latest	1m 55s
Test 3.13/ ubuntu-latest	22s
Test 3.12/ windows-latest	1m 36s
Test 3.12/ macos-latest	51s
integration 3.12 / 6-apache / postgres	1m 20s
integration 3.12 / 5-apache / postgres	1m 32s
integration 3.8 / 6-apache / postgres	1m 25s
integration 3.9 / 6-apache / postgres	1m 30s
integration 3.10 / 6-apache / postgres	1m 30s
integration 3.11 / 6-apache / postgres	1m 20s
integration 3.13 / 6-apache / postgres	1m 46s
integration pypy3.10 / 6-apache / postgres	1m 50s
integration 3.12 / refs/heads/5.x / postgres	3m 5s
integration 3.12 / refs/heads/develop / postgres	3m 17s
integration 3.12 / refs/heads/master / postgres	3m 15s
Coverage (unit)	21s
Coverage (integration)	20s
	29m 56s

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