Include separate compare for MAJOR and MINOR

as it should be

Co-authored-by: Peter L Jones <[email protected]>

linux/setup_repo.sh

@@ -18,7 +18,7 @@ else
     exit 1
 fi
 
-if (($(echo "${APT_MAJOR}.${APT_MINOR} < 2.2" | bc -l))); then
+if [[ ${APT_MAJOR} -lt 2 || ( ${APT_MAJOR} -eq 2 && ${APT_MINOR} -lt 2 ) ]]; then
     echo "Your apt version is incompatible. You may not be able install this repository. "
     echo "See: https://github.com/orgs/jamulussoftware/discussions/3180"
     echo "Also of interest: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1950095"