chore(deps): update actions/setup-node action to v6

Author: renovate[bot]

.github/actions/npm-cache/action.yml

@@ -9,7 +9,7 @@ runs:
           with:
               access_token: ${{ github.token }}
         - name: Setup Node.js
-          uses: actions/setup-node@v4
+          uses: actions/setup-node@v6
           with:
               node-version: '18'
         - name: Cache node_modules