chore(deps): update actions/setup-node action to v6 (#121)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -20,11 +20,11 @@ jobs:
     steps:
       - uses: actions/checkout@v5
       - run: corepack enable
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node }}
           cache: pnpm
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v6
 
       - name: 📦 Install dependencies
         run: pnpm install