build: pin Node 21.x to minor

Co-authored-by: Aravind Nair <[email protected]>
closes #5430

Author: UlisesGascon

.github/workflows/ci.yml

@@ -118,7 +118,7 @@ jobs:
           node-version: "20.11"
 
         - name: Node.js 21.x
-          node-version: "21.6.2"
+          node-version: "21.6"
 
     steps:
     - uses: actions/checkout@v4