Bump mklkj/tinymce-i18n from 25.2.3 to 25.5.12 (#4814)

Bumps [mklkj/tinymce-i18n](https://github.com/mklkj/tinymce-i18n) from 25.2.3 to 25.5.12.
- [Release notes](https://github.com/mklkj/tinymce-i18n/releases)
- [Commits](mklkj/tinymce-i18n@25.2.3...25.5.12)

---
updated-dependencies:
- dependency-name: mklkj/tinymce-i18n
  dependency-version: 25.5.12
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]