Update zeus_expected to v1.2.0 (#5834)

packages/z/zeus_expected/xmake.lua

@@ -7,6 +7,7 @@ package("zeus_expected")
     add_urls("https://github.com/zeus-cpp/expected/archive/refs/tags/$(version).tar.gz",
              "https://github.com/zeus-cpp/expected.git")
 
+    add_versions("v1.2.0", "460da641f212c793f46a5a8f29107c9b9540a17a91f197e2dc396dac0269a2b5")
     add_versions("v1.1.1", "47b411677ffb2fa0d43b308797542509ae2bdb101426cf0d4777e3c162b1d726")
     add_versions("v1.1.0", "a963eba43f227498da2cbb924265344209696320c75ee63a92073936bb49f7e5")
     add_versions("v1.0.1", "e2a7dd56837fa1c30ce255c52361b6a245e732d265cfbd449d60826a8d0625ae")