Update Swoole

Author: abnegate

Dockerfile

@@ -4,7 +4,7 @@ FROM $BASEIMAGE AS compile
 
 ENV PHP_REDIS_VERSION="6.1.0" \
     PHP_MONGODB_VERSION="2.1.1" \
-    PHP_SWOOLE_VERSION="v5.1.7" \
+    PHP_SWOOLE_VERSION="v5.1.8" \
     PHP_IMAGICK_VERSION="3.7.0" \
     PHP_YAML_VERSION="2.2.4" \
     PHP_MAXMINDDB_VERSION="v1.12.0" \