Add redis-plus-plus version 1.3.8 (#2052)

packages/r/redis-plus-plus/xmake.lua

@@ -7,6 +7,7 @@ package("redis-plus-plus")
     add_versions("1.3.5", "a49a72fef26ed39d36a278fcc4e4d92822e111697b5992d8f26f70d16edc6c1f")
     add_versions("1.3.6", "87dcadca50c6f0403cde47eb1f79af7ac8dd5a19c3cad2bb54ba5a34f9173a3e")
     add_versions("1.3.7", "89cb83b0a23ac5825300c301814eab74aa3cdcfcd12e87d443c2692e367768ba")
+    add_versions("1.3.8", "ad521b4a24d1591a1564f945ba6370875b501210222e324f398065251df41641")
 
     add_deps("hiredis")
     add_deps("cmake")