docs(config): update v7 to latest version (#2862)

Author: liamdebeasi

docusaurus.config.js

@@ -281,16 +281,10 @@ module.exports = {
           return `https://github.com/ionic-team/ionic-docs/edit/main/${versionDocsDirPath}/${docPath}`;
         },
         exclude: ['README.md'],
-        lastVersion: 'v6',
+        lastVersion: 'current',
         versions: {
           current: {
-            label: 'v7 (beta)',
-            banner: 'unreleased',
-            path: 'v7',
-          },
-          v6: {
-            label: 'v6',
-            banner: 'none',
+            label: 'v7',
           },
         },
       },