Bump actions/setup-node from 5 to 6 (#66)

Author: dependabot[bot]

.github/workflows/check-dist.yml

@@ -28,7 +28,7 @@ jobs:
 
       - name: Setup Node.js
         id: setup-node
-        uses: actions/setup-node@v5
+        uses: actions/setup-node@v6
         with:
           node-version-file: .node-version
           cache: npm

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
     steps:
       - uses: actions/checkout@v5
 
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v6
         with:
           node-version-file: .node-version
           cache: npm