Update a recipe

recipes/wip/net/other/altuntun/recipe.toml

 #TODO source code error
 [source]
-git = "https://github.com/cloudflare/boringtun"
+git = "https://github.com/cableguard/altuntun"
 [build]
 template = "custom"
 script = """
-cookbook_cargo_packages boringtun-cli
+cookbook_cargo_packages altuntun-cli
 """