Use same SWIG version as IMP/RMF

Author: benmwebb

tools/setup_ci.sh

@@ -10,7 +10,7 @@ fi
 python_version=$1
 
 conda config --remove channels defaults || :  # get conda-forge, not main, packages
-conda create --yes -q -n python${python_version} -c salilab -c conda-forge python=${python_version} pip imp-nightly libboost-devel gxx_linux-64 eigen cereal swig cmake protobuf matplotlib
+conda create --yes -q -n python${python_version} -c salilab -c conda-forge python=${python_version} pip imp-nightly libboost-devel gxx_linux-64 eigen cereal swig==4.3 cmake protobuf matplotlib
 eval "$(conda shell.bash hook)"
 conda activate python${python_version}