chore(renovate): run end-to-end tests on runner updates (#12423)

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12423
Reviewed-by: Michael Kriese <michael.kriese@gmx.de>

Author: mfenniak

.forgejo/renovate.json

@@ -138,6 +138,13 @@
       ],
       "automerge": true
     },
+    {
+      "description": "Run end-to-end tests for some dependencies",
+      "matchPackageNames": [
+        "code.forgejo.org/forgejo/runner/**"
+      ],
+      "addLabels": ["run-end-to-end-tests"]
+    },
     {
       "description": "Disable indirect updates for stable branches",
       "matchBaseBranches": ["/^v\\d+\\.\\d+\\/forgejo$/"],