Added new version for package gcem (#1746)

packages/g/gcem/xmake.lua

@@ -8,6 +8,7 @@ package("gcem")
     add_urls("https://github.com/kthohr/gcem/archive/refs/tags/$(version).tar.gz",
              "https://github.com/kthohr/gcem.git")
     add_versions("v1.13.1", "69a1973f146a4a5e584193af062359f50bd5b948c4175d58ea2622e1c066b99b")
+    add_versions("v1.16.0", "119c742b9371c0adc7d9cd710c3cbc575459a98fb63f6be4c636215dcf8404ce")
 
     add_deps("cmake")
     on_install("windows", "macosx", "linux", "mingw", function (package)