cimg: update to v3.6.4 (#8684)

Author: apocelipes

packages/c/cimg/xmake.lua

@@ -9,6 +9,7 @@ package("cimg")
     end})
     add_urls("https://github.com/greyclab/cimg.git", {alias="git"})
 
+    add_versions("v3.6.4", "50845fa3533d2a4e011b2f333a882b1ceaad3038a50b86308418e1b7320bb897")
     add_versions("v3.6.3", "6dd5aabbf1edf56f39d09cdb9d361dd526db0b9c0991f7bf8b1b2b489fa043ae")
     add_versions("v3.6.2", "e4ec8c103015903d5e66bc4d1cd39fb19e9d2f535c45917587668abc74226147")
     add_versions("v3.6.1", "63bf760fd98bde151f8cbb78be595aaf2b1d370eafa36fbd41b4cac2aa6ddc47")
@@ -26,6 +27,7 @@ package("cimg")
     add_versions("v3.3.6", "7bb6621c38458152f3d1cae3f020e4ca6a314076cb7b4b5d6bbf324ad3d0ab88")
     add_versions("v3.2.6", "1fcca9a7a453aa278660c10d54c6db9b4c614b6a29250adeb231e95a0be209e7")
 
+    add_versions("git:v3.6.4", "v.3.6.4")
     add_versions("git:v3.6.3", "v.3.6.3")
     add_versions("git:v3.6.2", "v.3.6.2")
     add_versions("git:v3.6.1", "v.3.6.1")