formula: sort outdated versions naturally.

Because the versions are read from directory listings, we get
alphabetical sorts of version numbers in `brew outdated` output:

   some-keg (10.1.10, 10.1.11, 10.1.9 < 10.1.12)

This is nicer:

   some-keg (10.1.9, 10.1.10, 10.1.11 < 10.1.12)

Closes Homebrew/homebrew#49534.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Library/Homebrew/formula.rb

@@ -974,7 +974,7 @@ class Formula
       end
 
       if older_or_same_tap_versions.all? { |v| pkg_version > v }
-        all_versions
+        all_versions.sort!
       else
         []
       end