Bump actions/setup-node from 4 to 6 (#185)

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 4
to 6.

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v6
     - name: Install Node.js
-      uses: actions/setup-node@v4
+      uses: actions/setup-node@v6
       with:
         node-version: 16.x
     - run: npm install

.github/workflows/deploy.yml

@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 16.x
 
@@ -30,7 +30,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 16.x
 

.github/workflows/format-check.yml

@@ -14,7 +14,7 @@ jobs:
         run: ./scripts/run-copyright-check.sh
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '16.x'