feat: Run compile_messages on new de and nl locales

[fsbraun]

Description

This fixes a missing parameter in nl .po file and adds up-to-date .mo files.

Also, this PR adds the locale directory tree to the project's MANIFEST to ensure translations are packaged.

Related resources

• ...

• ...

Checklist

• [ ] I have opened this pull request against master
• [ ] I have added or modified the tests when changing logic
• [ ] I have followed the conventional commits guidelines to add meaningful information into the changelog
• [ ] I have read the contribution guidelines and I have joined #workgroup-pr-review on Slack to find a “pr review buddy” who is going to review my pull request.

[codecov[bot]]

Codecov Report

Merging #332 (cf6dfb3) into master (91eafe1) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #332   +/-   ##
=======================================
  Coverage   90.93%   90.93%           
=======================================
  Files          72       72           
  Lines        2536     2536           
  Branches      358      358           
=======================================
  Hits         2306     2306           
  Misses        170      170           
  Partials       60       60