feat(dependencies): add Eventsourced package group for updates

Adds a new package group for Eventsourced to the Renovate configuration.  
This change improves dependency management by organizing related  
packages under a specific group for better update tracking.

renovate.json

@@ -12,6 +12,12 @@
         "registry.gitlab.com/unboundsoftware/schemas"
       ],
       "enabled": false
+    },
+    {
+      "groupName": "Eventsourced",
+      "matchPackageNames": [
+        "gitlab.com/unboundsoftware/eventsourced/**"
+      ]
     }
   ]
 }