chore: bump actions/setup-node from 3 to 4 (#269)

Author: dependabot[bot]

.github/workflows/required-spec-validations.yml

@@ -24,7 +24,7 @@ jobs:
         - name: Checkout repository
           uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
         - name: Setup Node
-          uses: actions/setup-node@v3
+          uses: actions/setup-node@v4
           with:
             node-version: '20.x'  
         - name: Install npm dependencies