Pin emoji-datasource@4.0.4

https://github.com/tootsuite/mastodon/pull/7746#issue-192999215

package.json

@@ -63,7 +63,7 @@
     "cssnano": "^4.1.10",
     "detect-passive-events": "^2.0.0",
     "dotenv": "^8.0.0",
-    "emoji-datasource": "^6.0.1",
+    "emoji-datasource": "4.0.4",
     "emoji-mart": "https://gitlab.com/seanking2919/emoji-mart#build",
     "es6-symbol": "^3.1.1",
     "escape-html": "^1.0.3",

yarn.lock

@@ -4537,10 +4537,10 @@ elliptic@^6.0.0:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.0"
 
-emoji-datasource@^6.0.1:
-  version "6.0.1"
-  resolved "https://registry.yarnpkg.com/emoji-datasource/-/emoji-datasource-6.0.1.tgz#0fd25101104cf16ddf36819237f4f174ec85a01f"
-  integrity sha512-kvkqTjdeXhVKwT2242jGhK18EpevORCTTBETDhByWOEVGwn5X+W5jvBioo+wrAnR7inUzydJ4gKUU5SQGjUG6A==
+emoji-datasource@4.0.4:
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/emoji-datasource/-/emoji-datasource-4.0.4.tgz#516b9ab2f34569e468e4e3753a34a47a0b2b5aa3"
+  integrity sha1-UWuasvNFaeRo5ON1OjSkegsrWqM=
 
 "emoji-mart@https://gitlab.com/seanking2919/emoji-mart#build":
   version "2.6.3"