Python: use `uv` rather than `pip` #2925

Job	Run time
Spell check	11s
Windows static library (Intel)	2m 1s
Windows shared library (ARM)	2m 12s
Linux shared library (Intel)	1m 41s
Windows shared library (Intel)	1m 59s
macOS static library (Intel)	2m 18s
Linux shared library (ARM)	1m 24s
Windows static library (ARM)	2m 6s
macOS shared library (ARM)	1m 25s
macOS shared library (Intel)	46s
macOS static library (ARM)	43s
Windows Python bindings	1m 58s
Python code formatting	36s
JavaScript bindings	1m 44s
macOS Python bindings	1m 42s
Memory checks	2m 10s
Documentation	38s
Code analysis	2m 10s
Linux Python bindings	1m 35s
JavaScript code formatting	1m 17s
Code formatting	33s
Linux static library (ARM)	1m 48s
Linux static library (Intel)	1m 58s
Code coverage	15s
	35m 10s

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