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

Author: renovate-bot

.github/workflows/lint-and-test.yml

@@ -143,7 +143,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: ${{ env.NODE_VERSION }}
           cache: 'npm'

.github/workflows/prepare-release.yml

@@ -62,7 +62,7 @@ jobs:
           fetch-depth: 0
 
       - name: Setup Node
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '25'