Update to latest actions

Author: hsbt

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
       - name: Setup Node.js
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with:
           node-version: '20'
           cache: 'npm'

.github/workflows/jekyll.yml

@@ -28,7 +28,7 @@ jobs:
           ruby-version: '3.2'
           bundler-cache: true
       - name: Setup Node.js
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+        uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with:
           node-version: '20'
           cache: 'npm'