[Snyk] Upgrade react-i18next from 15.1.2 to 15.6.0

[neilime]

Snyk has created this PR to upgrade react-i18next from 15.1.2 to 15.6.0.

ℹ️ Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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• The recommended version is 11 versions ahead of your current version.

• The recommended version was released a month ago.

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Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• This PR was automatically created by Snyk using the credentials of a real user.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 28.88%. Comparing base (fe1fb9c) to head (0ac5bca).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #961   +/-   ##
=======================================
  Coverage   28.88%   28.88%           
=======================================
  Files          17       17           
  Lines         225      225           
  Branches       29       27    -2     
=======================================
  Hits           65       65           
- Misses        154      159    +5     
+ Partials        6        1    -5     

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