ci(deps): bump actions/setup-node from 4 to 6 (#38)

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -341,7 +341,7 @@ jobs:
       uses: actions/checkout@v5
 
     - name: Setup Node.js
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: ${{ env.NODE_VERSION }}
         cache: npm

.github/workflows/docs.yml

@@ -29,7 +29,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '20'
           cache: 'npm'
@@ -72,7 +72,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '20'
           cache: 'npm'