add latest version to releases page

Author: jdpleiness

docs/releases.mdx

@@ -12,6 +12,7 @@ Currently supported versions of Sourcegraph:
 
 | **Release**  | **General Availability Date** | **Supported** | **Release Notes**                                                  | **Install**                                          |
 |--------------|-------------------------------|---------------|--------------------------------------------------------------------|------------------------------------------------------|
+| 5.11 Patch 5 | January 2025                  | ✅             | [Notes](https://sourcegraph.com/docs/technical-changelog#v5116271) | [Install](https://sourcegraph.com/docs/admin/deploy) |
 | 5.11 Patch 4 | January 2025                  | ✅             | [Notes](https://sourcegraph.com/docs/technical-changelog#v5114013) | [Install](https://sourcegraph.com/docs/admin/deploy) |
 | 5.11 Patch 3 | January 2025                  | ✅             | [Notes](https://sourcegraph.com/docs/technical-changelog#v5114013) | [Install](https://sourcegraph.com/docs/admin/deploy) |
 | 5.11 Patch 2 | January 2025                  | ✅             | [Notes](https://sourcegraph.com/docs/technical-changelog#v5113601) | [Install](https://sourcegraph.com/docs/admin/deploy) |