Update 'install.sh'

install.sh

@@ -56,9 +56,10 @@ if [ "$(uname | grep -i 'Darwin')" ]; then
     exit 1
   fi
 
-  if [ "$OSX_MAJOR" -gt 10 ]; then
-    echo "unsupported OS X version (os 11+)"
-    exit 1
+  # OS X (10) and macOS (11) should be supported
+
+  if [ "$OSX_MAJOR" -gt 11 ]; then
+    echo "WARNING: macOS 12+ may or may not be supported"
   fi
 
   #