Build with latest SWIG

IMP and RMF packages now are tagged with the SWIG runtime version, so we don't need to restrict our builds to an older SWIG.

Author: benmwebb

support/setup_ci.sh

@@ -18,7 +18,7 @@ if [ ${imp_branch} = "develop" ]; then
 else
   IMP_CONDA="imp"
 fi
-conda create --yes -q -n python${python_version} -c salilab python=${python_version} pip ${IMP_CONDA} libboost-devel gxx_linux-64 eigen cereal swig==4.3 cmake numpy
+conda create --yes -q -n python${python_version} -c salilab python=${python_version} pip ${IMP_CONDA} libboost-devel gxx_linux-64 eigen cereal swig cmake numpy
 eval "$(conda shell.bash hook)"
 conda activate python${python_version}