Use npm ci

Use npm ci instead of npm install.

Author: martincostello

.github/workflows/lighthouse.yml

@@ -30,7 +30,7 @@ jobs:
       shell: pwsh
       run: |
         Push-Location (Join-Path "src" "Website")
-        npm install
+        npm ci
         npm run build
         Pop-Location
         Start-Process nohup 'dotnet run --project ./src/Website/Website.csproj --configuration Release'