build(deps): bump mklkj/tinymce-i18n from 25.6.2 to 25.8.4

Bumps [mklkj/tinymce-i18n](https://github.com/mklkj/tinymce-i18n) from 25.6.2 to 25.8.4.
- [Release notes](https://github.com/mklkj/tinymce-i18n/releases)
- [Commits](mklkj/tinymce-i18n@25.6.2...25.8.4)

---
updated-dependencies:
- dependency-name: mklkj/tinymce-i18n
  dependency-version: 25.8.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]