Update Node.js version in CI workflows to v24

Author: rhysd

.github/workflows/check-dist.yml

@@ -22,10 +22,10 @@ jobs:
         with:
           persist-credentials: false
 
-      - name: Setup Node.js 20.x
+      - name: Setup Node.js 24.x
         uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6.1.0
         with:
-          node-version: 20.x
+          node-version: 24.x
           cache: npm
 
       - name: Install dependencies

.github/workflows/dependabot.yml

@@ -39,7 +39,7 @@ jobs:
         if: steps.npm.outputs.changed != ''
         uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6.1.0
         with:
-          node-version: 20.x
+          node-version: 24.x
           cache: npm
       - name: Re-generate and commit dist/ if changed
         id: amend