Include tags for versions larger than 5

This includes tags for versions larger than 5, but only as large as 9. We
will need to fix this for versions >= 10.

antora-playbook.yml

@@ -14,7 +14,7 @@ content:
   sources:
     - url: https://github.com/spring-projects/spring-security
       branches: [main, '5.{{6..9},{1..9}+({0..9})}.x']
-      tags: '5.{{6..9},{1..9}+({0..9})}.+({0..9})?(-RC{1..9})'
+      tags: ['5.{{6..9},{1..9}+({0..9})}.+({0..9})?(-RC{1..9})','{6..9}.*']
       start_path: docs
 asciidoc:
   attributes: