Website: update /gitops-workshop redirect (#49283)

Changes:
- updated the route for /gitops-workshop to include the query string
when users are redirected to the /workshops page.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Bug Fixes**
* Updated the legacy GitOps Workshop link to redirect permanently to the
workshops page.
* Preserved query parameters during the redirect for a more consistent
navigation experience.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

website/config/routes.js

@@ -1148,7 +1148,7 @@ module.exports.routes = {
   'GET /autonomous-endpoint-management': (req, res) => { let originalQueryString = req.url.match(/\?(.+)$/) ? '?' + req.url.match(/\?(.+)$/)[1] : ''; return res.redirect(301, sails.config.custom.baseUrl + '/lp/autonomous-endpoint-management' + originalQueryString); },
   'GET /imagine/open-source': (req, res) => { let originalQueryString = req.url.match(/\?(.+)$/) ? '?' + req.url.match(/\?(.+)$/)[1] : ''; return res.redirect(301, sails.config.custom.baseUrl + '/lp/open-source' + originalQueryString); },
   'GET /orchestration': '/visibility-and-reporting',
-  'GET /gitops-workshop': '/workshops',
+  'GET /gitops-workshop': (req, res) => { let originalQueryString = req.url.match(/\?(.+)$/) ? '?' + req.url.match(/\?(.+)$/)[1] : ''; return res.redirect(301, sails.config.custom.baseUrl + '/workshops' + originalQueryString); },
   'GET /gitops-workshops': '/workshops',
   //  ╔╦╗╦╔═╗╔═╗  ╦═╗╔═╗╔╦╗╦╦═╗╔═╗╔═╗╔╦╗╔═╗   ┬   ╔╦╗╔═╗╦ ╦╔╗╔╦  ╔═╗╔═╗╔╦╗╔═╗
   //  ║║║║╚═╗║    ╠╦╝║╣  ║║║╠╦╝║╣ ║   ║ ╚═╗  ┌┼─   ║║║ ║║║║║║║║  ║ ║╠═╣ ║║╚═╗