ci: build the frontend on Node 24

Node 20 left support in April 2026, and the release binary was being built
on a Node the project isn't developed against — local builds run 24. Vite 5
declares >=20, so 24 is in range.

Author: AppsGanin

.github/workflows/ci.yml

@@ -36,7 +36,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 24
           cache: npm
           cache-dependency-path: web/package-lock.json
       - name: Install deps

.github/workflows/release-please.yml

@@ -36,7 +36,7 @@ jobs:
 
       - uses: actions/setup-node@v4
         with:
-          node-version: 20
+          node-version: 24
           cache: npm
           cache-dependency-path: web/package-lock.json