Rework for Jenkins testing #1251

Job	Run time
coverage	3m 45s
lint	1m 12s
all-builds	4m 57s
test-cxx (ubuntu-20.04, g++-9)	58s
test-cxx (ubuntu-22.04, g++-12)	59s
test-python (ubuntu-20.04, gcc-9, g++-9, 3.9)	1m 24s
test-python (ubuntu-22.04, gcc-12, g++-12, 3.12)	1m 25s
test-python (ubuntu-20.04, clang-10, clang++-10, 3.12)	1m 35s
test-python (ubuntu-22.04, clang-14, clang++-14, 3.12)	1m 25s
test-cxx (ubuntu-20.04, clang++-10)	55s
test-python (macos-14, clang, clang++, 3.12)	38s
test-cxx (ubuntu-22.04, clang++-14)	1m 3s
test-cxx (macos-14, clang++)	54s
cibuildwheel-macos	0s
sdist	0s
cibuildwheel-linux	0s
combine	0s
	21m 10s

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