lua: specified better the dependency on ncurses (needs +termlib) (#18163)

Semi-recently the lua spackage was updated to explicitly add libtinfow
to the lua build line. Ncurses provides this but only when the +termlib
variant is enabled

var/spack/repos/builtin/packages/lua/package.py

@@ -32,7 +32,7 @@ class Lua(Package):
 
     extendable = True
 
-    depends_on('ncurses')
+    depends_on('ncurses+termlib')
     depends_on('readline')
     # luarocks needs unzip for some packages (e.g. lua-luaposix)
     depends_on('unzip', type='run')