[TASK] Silence PHP opcache warnings

There are some environments where `opcache.restrict_api`(https://www.php.net/manual/en/opcache.configuration.php#ini.opcache.restrict-api)
is enabled for security/stability reasons. Using them produces PHP warnings like

```
PHP Warning:  Zend OPcache API is restricted by "restrict_api" configuration
directive in /tmp/vendor/typo3/phar-stream-wrapper/src/Helper.php on line 34
```

src/Helper.php

@@ -31,9 +31,9 @@ public static function resetOpCache()
     {
         if (function_exists('opcache_reset')
             && function_exists('opcache_get_status')
-            && !empty(opcache_get_status()['opcache_enabled'])
+            && !empty(@opcache_get_status()['opcache_enabled'])
         ) {
-            opcache_reset();
+            @opcache_reset();
         }
     }
 
@@ -195,4 +195,4 @@ private static function isWindows(): bool
     {
         return stripos(PHP_OS, 'WIN') === 0;
     }
-}
+}