Update uwebsockets to v20.74.0 (#6454)

* update uwebsockets to v20.74.0

* place #include <uWebSockets/PerMessageDeflate.h> into test

* remove

packages/u/uwebsockets/xmake.lua

@@ -7,6 +7,7 @@ package("uwebsockets")
     add_urls("https://github.com/uNetworking/uWebSockets/archive/refs/tags/$(version).tar.gz",
              "https://github.com/uNetworking/uWebSockets.git")
 
+    add_versions("v20.74.0", "e1d9c99b8e87e78a9aaa89ca3ebaa450ef0ba22304d24978bb108777db73676c")
     add_versions("v20.72.0", "ee15b503e85fcfd6d3e7f67e229bf8ffaee521a1fbdb6224a04265aaec4ea5c3")
     add_versions("v20.70.0", "39a7e32182df2da02955ab1c1681af9710c82115075f4caabb8689a2c04460b9")
     add_versions("v20.67.0", "8124bb46326f81d99ad3552b7a3bf78489784d3660fb60d7fe5f5337a21203a3")