Extend range of Python versions supported in Venv setup script

- Add Python 3.10, though the GUI currently cannot load because of TraitsUI issue enthought/traitsui#1906
- Add Python 3.10-3.11 custom dependency support

bin/setup_venv.sh

@@ -70,8 +70,8 @@ fi
 # check for Python availability and version requirement
 py_ver_majmin="" # found Python version in x.y format
 py_ver_min=(3 6) # minimum supported Python version
-py_vers=(3.8 3.7 3.6 3.9) # range of versions currently supported
-py_vers_prebuilt_deps=(3.6 3.7 3.8 3.9) # vers with custom prebuilt deps
+py_vers=(3.8 3.7 3.6 3.9 3.10) # range of versions currently supported
+py_vers_prebuilt_deps=(3.6 3.7 3.8 3.9 3.10 3.11) # vers with custom prebuilt deps
 for ver in "${py_vers[@]}"; do
   # prioritize specific versions in case "python" points to lower version,
   # calling Python directly since `command` will show Pyenv Python binaries