CI: Use SWIG 4.3.1 (#2694)

Author: dweindl

scripts/downloadAndBuildSwig.sh

@@ -7,7 +7,7 @@ set -euo pipefail
 SCRIPT_PATH=$(dirname "$BASH_SOURCE")
 AMICI_PATH=$(cd "$SCRIPT_PATH/.." && pwd)
 
-swig_version="${1:-"4.2.0"}"
+swig_version="${1:-"4.3.1"}"
 SWIG_ARCHIVE="swig-${swig_version}.tar.gz"
 SWIG_URL="http://downloads.sourceforge.net/project/swig/swig/swig-${swig_version}/${SWIG_ARCHIVE}"
 SWIG_DIR="swig-${swig_version}"