GitHub CI: Install PHP module 'sqlite'

Signed-off-by: Daniel Rudolf <github.com@daniel-rudolf.de>

Author: PhrozenByte

.github/workflows/test.yml

@@ -161,7 +161,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.PHP_VERSION }}
-          extensions: gd
+          extensions: gd, sqlite
           tools: composer
 
       - name: Restore cached Nextcloud