Ignore problematic node update

Author: trask

.github/workflows/build-common.yml

@@ -281,11 +281,11 @@ jobs:
           distribution: temurin
           java-version-file: .java-version
 
-      # vaadin 14 tests fail with node 18
       - name: Set up Node
         uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
         with:
-          node-version: 16
+          # vaadin 14 tests fail with node 18
+          node-version: 16 # renovate: ignore
 
       # vaadin tests use pnpm
       - name: Cache pnpm modules