chore(deps): update dependency go to v1.26.4 (#549)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/i18n_sync.yml

@@ -35,7 +35,7 @@ jobs:
       - name: Setup go
         uses: actions/setup-go@v6
         with:
-          go-version: "1.26.3"
+          go-version: "1.26.4"
           cache-dependency-path: backend/go.sum
 
       - name: Generate and update lang files