update react-emoji-render to v1.2.4 (#6674)

package-lock.json

     },
     "react-emoji-render": {
       "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/react-emoji-render/-/react-emoji-render-1.0.0.tgz",
-      "integrity": "sha512-14iNQ1bOqijkIwfmuYMnG0lew2GJhRmSEPEYi7Dc3RDgklaXXwbLB0bmJF/0LUpDH1hy3I1H3EyrKb//FdwCmg==",
+      "resolved": "https://registry.npmjs.org/react-emoji-render/-/react-emoji-render-1.2.4.tgz",
+      "integrity": "sha512-AqktVXV38uDpgf02BoCXrzLYFsHAsxfdWwjrLexSJ22l1JgB01y1KejjxW/zTuCzod6O7BZfiMS866LEEfMHmA==",
       "requires": {
         "classnames": "^2.2.5",
         "emoji-regex": "^6.4.1",

package.json

     "pixelmatch": "5.1.0",
     "react": "16.9",
     "react-dom": "16.9",
-    "react-emoji-render": "1.0.0",
+    "react-emoji-render": "1.2.4",
     "react-i18next": "10.11.4",
     "react-linkify": "1.0.0-alpha",
     "react-native": "github:jitsi/react-native#efd2aff5661d75a230e36406b698cfe0ee545be2",