Bump to hlissner/doom-snippets@22c96ef

To include the following PRs:

+ hlissner/doom-snippets#27
+ hlissner/doom-snippets#26
+ hlissner/doom-snippets#23
+ hlissner/doom-snippets#21
+ hlissner/doom-snippets#20

modules/editor/snippets/packages.el

@@ -7,4 +7,4 @@
   :recipe (:host github
            :repo "hlissner/doom-snippets"
            :files ("*.el" "*"))
-  :pin "7ba920d1de")
+  :pin "22c96ef548")