Update icu4c, fix links on Windows (#2078)

* Improve icu4c

* Add mingw patch for v73.1

packages/i/icu4c/xmake.lua

@@ -6,6 +6,7 @@ package("icu4c")
     add_urls("https://github.com/unicode-org/icu/releases/download/release-$(version)-src.tgz", {version = function (version)
             return (version:gsub("%.", "-")) .. "/icu4c-" .. (version:gsub("%.", "_"))
         end})
+    add_versions("73.1", "a457431de164b4aa7eca00ed134d00dfbf88a77c6986a10ae7774fc076bb8c45")
     add_versions("72.1", "a2d2d38217092a7ed56635e34467f92f976b370e20182ad325edea6681a71d68")
     add_versions("71.1", "67a7e6e51f61faf1306b6935333e13b2c48abd8da6d2f46ce6adca24b1e21ebf")
     add_versions("70.1", "8d205428c17bf13bb535300669ed28b338a157b1c01ae66d31d0d3e2d47c3fd5")
@@ -18,10 +19,11 @@ package("icu4c")
     add_patches("70.1", path.join(os.scriptdir(), "patches", "70.1", "replace-py-3.patch"), "6469739da001721122b62af513370ed62901caf43af127de3f27ea2128830e35")
     if is_plat("mingw") then
         add_patches("72.1", path.join(os.scriptdir(), "patches", "72.1", "mingw.patch"), "9ddbe7f691224ccf69f8c0218f788f0a39ab8f1375cc9aad2cc92664ffcf46a5")
+        add_patches("73.1", path.join(os.scriptdir(), "patches", "72.1", "mingw.patch"), "9ddbe7f691224ccf69f8c0218f788f0a39ab8f1375cc9aad2cc92664ffcf46a5")
     end
 
     add_links("icutu", "icuio")
-    if is_plat("mingw") then
+    if is_plat("mingw", "windows") then
         add_links("icuin", "icuuc", "icudt")
     else
         add_links("icui18n", "icuuc", "icudata")