Fix CI.

.gitea/workflows/deploy.yml

@@ -40,12 +40,12 @@ jobs:
           export DEBIAN_FRONTEND=noninteractive
           apt update
           apt upgrade -y
-          apt install -y graphicsmagick p7zip-full
+          apt install -y graphicsmagick p7zip-full chromium-browser
       -
         name: Use Node.js
         uses: https://github.com/actions/setup-node@v2
         with:
-          node-version: '14'
+          node-version: '20'
       -
         name: Install node dependencies
         run: npm ci
@@ -80,7 +80,7 @@ jobs:
         with:
           name: build_artifact
           path: artifact.7z
-          retention-days: 7
+          retention-days: 365
   job2:
     needs: job1
     name: Connect to deployment host, update, and redeploy docs website.