Bump i18next from 21.3.3 to 21.6.4

Bumps [i18next](https://github.com/i18next/i18next) from 21.3.3 to 21.6.4.
- [Release notes](https://github.com/i18next/i18next/releases)
- [Changelog](https://github.com/i18next/i18next/blob/master/CHANGELOG.md)
- [Commits](https://github.com/i18next/i18next/compare/v21.3.3...v21.6.4)

---
updated-dependencies:
- dependency-name: i18next
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -86,7 +86,7 @@
     "electron-window-state": "^5.0.3",
     "element-ui": "2.15.6",
     "emoji-mart-vue": "^2.6.6",
-    "i18next": "^21.3.3",
+    "i18next": "^21.6.4",
     "lodash": "^4.17.21",
     "lokijs": "^1.5.12",
     "megalodon": "3.6.7",

yarn.lock

@@ -6492,10 +6492,10 @@ humanize-plus@^1.8.1:
   resolved "https://registry.yarnpkg.com/humanize-plus/-/humanize-plus-1.8.2.tgz#a65b34459ad6367adbb3707a82a3c9f916167030"
   integrity sha1-pls0RZrWNnrbs3B6gqPJ+RYWcDA=
 
-i18next@*, i18next@^21.3.3:
-  version "21.3.3"
-  resolved "https://registry.yarnpkg.com/i18next/-/i18next-21.3.3.tgz#1065d557328db29a2e1f33526ed37608cdb0242c"
-  integrity sha512-Wv5arCT9pK35nfhOzTdS64T7JpPcoqnkOEidxc4zF0DZ8KetpvmnkO+uWkXy+DFz6zWzPX7U9bIemwBqpFRprw==
+i18next@*, i18next@^21.6.4:
+  version "21.6.4"
+  resolved "https://registry.yarnpkg.com/i18next/-/i18next-21.6.4.tgz#4da52a429094112b33d4383b5f44aa4890dcb081"
+  integrity sha512-pk0Utxtq5g//Q9ONQ0w3+PRSwOFJ7+m4rAekhHHg1Xql0KcUjJU7DzmzweGy6DsrIQ1GM/t57wLeeGuyGKtjTg==
   dependencies:
     "@babel/runtime" "^7.12.0"