- Update engine.io version to 5.2.1

- Checked the websocket, all are working well
https://youtrack.weseek.co.jp/issue/GW-7673

yarn.lock

@@ -7625,9 +7625,9 @@ engine.io@~3.5.0:
     ws "~7.4.2"
 
 engine.io@~5.2.0:
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-5.2.0.tgz#554cdd0230d89de7b1a49a809d7ee5a129d36809"
-  integrity sha512-d1DexkQx87IFr1FLuV+0f5kAm1Hk1uOVijLOb+D1sDO2QMb7YjE02VHtZtxo7xIXMgcWLb+vl3HRT0rI9tr4jQ==
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-5.2.1.tgz#3f84baf13471d35a6f3284a4effcd04c2f73c8a1"
+  integrity sha512-hyNxjVgWp619QMfqi/+/6/LQF+ueOIWeVOza3TeyvxUGjeT9U/xPkkHW/NJNuhbStrxMujEoMadoc2EY7DDEnw==
   dependencies:
     accepts "~1.3.4"
     base64id "2.0.0"