chore: upgrade all workflows to Node 24

Updates all GitHub Actions workflows from Node 18/20 to Node 24,
matching the version specified in mise.toml and @types/node in package.json.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/check-dist.yml

@@ -36,7 +36,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
         with:
-          node-version: 18
+          node-version: 24
           cache: npm
 
       - name: Install Dependencies

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
         id: setup-node
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
         with:
-          node-version: 18
+          node-version: 24
           cache: npm
 
       - name: Install Dependencies

.github/workflows/renovate-dist-update.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '24'
           cache: 'npm'
 
       - name: Install dependencies