Bump setuptools from 68.0.0 to 73.0.1 #4864

Job	Run time
Generate llhttp sources	10s
Linter	1m 3s
Test (3.9, ubuntu, false)	6m 26s
Test (3.9, macos, false)	4m 27s
Test (3.9, windows, false)	6m 39s
Test (3.9, Y, ubuntu, false)	5m 32s
Test (3.10, ubuntu, false)	7m 10s
Test (3.10, macos, false)	4m 21s
Test (3.10, windows, false)	6m 26s
Test (3.10, Y, ubuntu, false)	7m 10s
Test (3.11, ubuntu, false)	7m 33s
Test (3.11, macos, false)	4m 18s
Test (3.11, windows, false)	6m 12s
Test (3.11, Y, ubuntu, false)	6m 28s
Test (3.12, ubuntu, false)	7m 13s
Test (3.12, macos, false)	4m 46s
Test (3.12, windows, false)	6m 37s
Test (3.12, Y, ubuntu, false)	5m 32s
Test (pypy-3.9, Y, ubuntu, false)	11m 15s
Test (ubuntu, 3.13, true, Y)	2m 28s
check	7s
Pre-Deploy	0s
Tarball	0s
Build wheels on ${{ matrix.os }} ${{ matrix.qemu }}	0s
Deploy	0s
	1h 51m 53s

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