Enable 'uv' build & managed Python #136

Job	Run time
build (1.22.x, 3.11)	1m 22s
build (1.22.x, 3.12)	1m 21s
call-lint / lint-ubuntu (1.22.x)	27s
integration-test (3.11) / integration_test	1m 58s
integration-test (3.12) / integration_test	2m 22s
	7m 30s

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