CI: build on Node 24 (Node 20 runtime deprecated)

Bump node-version 20 -> 24 in the deploy and resume-canary workflows.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Nt6ycjAMdUMqGTGtbKocrs

.github/workflows/deploy.yml

@@ -22,7 +22,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '24'
       - name: Install dependencies
         run: yarn install --frozen-lockfile
       - name: Build static export (regenerates resume.json + resume.html first)

.github/workflows/resume-canary.yml

@@ -27,7 +27,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '24'
       - name: Verify resume.json matches resume.org
         run: node scripts/org-to-json.mjs resume.org resume.json --check
       - name: Verify public/resume.html matches resume.json