deps: Upgrade to latest version of emoji dependency

To add support for new emojis in Hugo, we need to upgrade our internal
dependency on the emoji package.

Note that we also need to update our tests, as the underlying emoji that
is rendered has changed.

Follow-up to #6391. (170f18d935 and
2df5d202c6)

data/docs.json

@@ -4109,7 +4109,7 @@
           "Examples": [
             [
               "{{ \"I :heart: Hugo\" | emojify }}",
-              "I ❤️ Hugo"
+              "I ❤ Hugo"
             ]
           ]
         },