fix: PHP 7.4 compatibility

Signed-off-by: Julius Härtl <jus@bitgrid.net>

.github/workflows/integration.yml

@@ -69,16 +69,17 @@ jobs:
               path: apps/activity
 
       - name: Set up php ${{ matrix.php-versions }}
-        uses: shivammathur/setup-php@2.18.0
+        uses: shivammathur/setup-php@2.25.4
         with:
           php-version: ${{ matrix.php-versions }}
-          tools: phpunit
-          extensions: mbstring, iconv, fileinfo, intl, sqlite, pdo_sqlite, mysql, pdo_mysql, pgsql, pdo_pgsql,
+          extensions: bz2, ctype, curl, dom, fileinfo, gd, iconv, intl, json, libxml, mbstring, openssl, pcntl, posix, session, simplexml, xmlreader, xmlwriter, zip, zlib, sqlite, pdo_sqlite, mysql, pdo_mysql, pgsql, pdo_pgsql, apcu
+          ini-values:
+            apc.enable_cli=on
           coverage: none
 
-      - name: Set up PHPUnit
+      - name: Set up dependencies
         working-directory: apps/${{ env.APP_NAME }}
-        run: composer i
+        run: composer i --no-dev
 
       - name: Set up Nextcloud
         run: |