fix stan

Author: mvorisek

src/Mutex/RedisMutex.php

@@ -107,7 +107,7 @@ protected function add(string $key, string $value, float $expireTimeout): bool
             try {
                 //  Will set the key, if it doesn't exist, with a ttl of $expire seconds
                 return $this->client->set($key, $value, ['nx', 'px' => $expireTimeoutMillis]);
-            } catch (\RedisException $e) {
+            } catch (\RedisException $e) { // @phpstan-ignore catch.neverThrown
                 $message = sprintf(
                     'Failed to acquire lock for key \'%s\'',
                     $key