[WIP] Backport 8.2: Python 3.13 support #9755

Job	Run time
macOS-13 - setuptools (CC=gcc-9 CXX=g++-9)	10m 48s
macOS-13 - cmake (CC=gcc-8 CXX=g++-8)	12m 44s
macOS-13 - cmake (CC=gcc-9 CXX=g++-9)	14m 3s
macOS-13 - cmake (-DNRN_ENABLE_CORENEURON=ONCC=gcc-7 CXX=g++-7)	11m 12s
macOS-13 - cmake (-DNRN_ENABLE_MPI=OFF -DNRN_ENABLE_INTERVIEWS=OFF -DNRN_ENABLE_CORENEURON=ONCC=gcc-7 CXX=g++-7)	8m 55s
macOS-13 - cmake (-DNRN_ENABLE_PYTHON=OFF -DNRN_ENABLE_RX3D=OFF -DNRN_ENABLE_CORENEURON=ONCC=gcc-10 CXX=g++-10)	7m 57s
ubuntu-20.04 - setuptools (CC=gcc-9 CXX=g++-9)	6m 31s
ubuntu-20.04 - cmake (CC=gcc-8 CXX=g++-8)	8m 53s
ubuntu-20.04 - cmake (CC=gcc-9 CXX=g++-9)	9m 52s
ubuntu-20.04 - cmake (-DNRN_ENABLE_CORENEURON=ONCC=gcc-7 CXX=g++-7)	6m 13s
ubuntu-20.04 - cmake (-DNRN_ENABLE_MPI=OFF -DNRN_ENABLE_INTERVIEWS=OFF -DNRN_ENABLE_CORENEURON=ONCC=gcc-7 CXX=g++-7)	4m 40s
ubuntu-20.04 - cmake (-DNRN_ENABLE_PYTHON=OFF -DNRN_ENABLE_RX3D=OFF -DNRN_ENABLE_CORENEURON=ONCC=gcc-10 CXX=g++-10)	4m 34s
ubuntu-22.04 - cmake (-DNRN_ENABLE_CORENEURON=ON -DNRN_ENABLE_INTERVIEWS=OFF -DCORENRN_SANITIZERS=undefined)	7m 7s
ubuntu-22.04 - cmake (-DNRN_ENABLE_CORENEURON=ON -DNRN_ENABLE_INTERVIEWS=OFF -DCORENRN_SANITIZERS=address)	14m 0s
Final CI	1s
	2h 7m 30s

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