flydra_analysis: fix setuptools version to keep pkg_resources #318

Job	Run time
test-ubuntu-system-python (ubuntu-latest)	5m 41s
build (macos-latest, 3.x)	29s
build (windows-latest, 3.9)	3m 37s
build (macos-latest, 3.9)	2m 53s
build (windows-latest, 3.x)	1m 1s
build (ubuntu-latest, 3.9)	2m 26s
build (ubuntu-latest, 3.x)	46s
	16m 53s

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