feat: add the new shells variable to ensure support for all interactive shell.

Fix #269

apparmor.d/profiles-a-f/code

@@ -42,8 +42,7 @@ profile code flags=(attach_disconnected) {
   @{open_path}                  rPx -> child-open,
 
   # The shell is not confined on purpose.
-  @{bin}/{,b,d,rb}ash         rUx,
-  @{bin}/{c,k,tc,z}sh         rUx,
+  @{bin}/@{shells}              rUx,
 
   # Confine some common tools
   @{lib}/code/extensions/git/dist/askpass.sh     rPx,