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

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -15,7 +15,7 @@ jobs:
       - uses: hmarr/debug-action@v3
 
       - name: Use Node.js
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version-file: ".nvmrc"
           cache: "npm"