meson: update 1.8.1 (#7215)

packages/m/meson/xmake.lua

@@ -7,6 +7,7 @@ package("meson")
     add_urls("https://github.com/mesonbuild/meson/releases/download/$(version)/meson-$(version).tar.gz",
              "https://github.com/mesonbuild/meson.git")
 
+    add_versions("1.8.1", "c945684cfa718e24d98e880a384d5263d3ce8338501639c388451c85b8deebab")
     add_versions("1.8.0", "eea5274173e00b4b8144b754df5c6e9ccf9ea5acd4e9768efe5d591db2aa3f45")
     add_versions("1.7.2", "4d40d63aa748a9c139cc41ab9bffe43edd113c5639d78bde81544ca955aea890")
     add_versions("1.7.0", "08efbe84803eed07f863b05092d653a9d348f7038761d900412fddf56deb0284")