fix setup node version

Author: Sophia Marie Terry

.github/workflows/spectral-publish.yml

@@ -27,9 +27,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
-          node-version: "20"
+          node-version: '20.x'
+          cache: 'npm'
       - run: npm ci
       - run: npm test
       - uses: JS-DevTools/npm-publish@v3