Update dependency ubuntu to v26

.github/workflows/i18n.yml

@@ -25,7 +25,7 @@ permissions:
 jobs:
   extract-translation-templates:
     name: Extract translation templates
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-26.04
 
     # Same-repository pull requests already run via the push event;
     # run pull_request jobs only for pull requests from forks.