fix(publish): use Node.js 22 to match CLI engine requirement (>=22.5.0)

CLI requires node:sqlite which was added in Node 22.5.0. The publish
workflow was using Node 20, causing the smoke test to fail with a
version check error.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Copilot

.github/workflows/publish.yml

@@ -25,7 +25,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
 
       - name: Install dependencies
         run: npm ci
@@ -49,7 +49,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           registry-url: 'https://registry.npmjs.org'
 
       - name: Determine version
@@ -108,7 +108,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 22
           registry-url: 'https://registry.npmjs.org'
 
       - name: Determine version