chore: update CI badges (#39753)

diff --git a/README.md b/README.md
index 710187a..4f65ceb 100644
--- a/README.md
+++ b/README.md
@@ -7,8 +7,7 @@
         <p>ERP made simple</p>
     </p>
 
-[![CI](https://github.com/frappe/erpnext/actions/workflows/server-tests.yml/badge.svg?branch=develop)](https://github.com/frappe/erpnext/actions/workflows/server-tests.yml)
-[![UI](https://github.com/erpnext/erpnext_ui_tests/actions/workflows/ui-tests.yml/badge.svg?branch=develop&event=schedule)](https://github.com/erpnext/erpnext_ui_tests/actions/workflows/ui-tests.yml)
+[![CI](https://github.com/frappe/erpnext/actions/workflows/server-tests-mariadb.yml/badge.svg?event=schedule)](https://github.com/frappe/erpnext/actions/workflows/server-tests-mariadb.yml)
 [![Open Source Helpers](https://www.codetriage.com/frappe/erpnext/badges/users.svg)](https://www.codetriage.com/frappe/erpnext)
 [![codecov](https://codecov.io/gh/frappe/erpnext/branch/develop/graph/badge.svg?token=0TwvyUg3I5)](https://codecov.io/gh/frappe/erpnext)
 [![docker pulls](https://img.shields.io/docker/pulls/frappe/erpnext-worker.svg)](https://hub.docker.com/r/frappe/erpnext-worker)