Update google-cloud-cpp to v2.38.0 (#7598)

packages/g/google-cloud-cpp/xmake.lua

@@ -6,6 +6,7 @@ package("google-cloud-cpp")
     add_urls("https://github.com/googleapis/google-cloud-cpp/archive/refs/tags/$(version).tar.gz",
              "https://github.com/googleapis/google-cloud-cpp.git")
 
+    add_versions("v2.38.0", "f1493b2dce9b379714342f2be7ccb483d70d13aac09d4a90ae3b4756693b72fc")
     add_versions("v2.37.0", "10867580483cb338e7d50920c2383698f3572cc6b4c7d072e38d5f43755cbd80")
     add_versions("v2.36.0", "9a6e182fd658ba114512cf21bd9f274a315830638f62f0b831113df9e674bea0")
     add_versions("v2.34.0", "22deeb6c2abf0838f4d4c6100e83489bb581fa8015180370500ad31712f601ac")