Bump unidecode from 1.3.8 to 1.4.0

Bumps [unidecode](https://github.com/kmike/text-unidecode) from 1.3.8 to 1.4.0.
- [Release notes](https://github.com/kmike/text-unidecode/releases)
- [Commits](https://github.com/kmike/text-unidecode/commits)

---
updated-dependencies:
- dependency-name: unidecode
  dependency-version: 1.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -12,7 +12,7 @@ pyttsx3==2.98
 tomlkit==0.13.2
 Flask==3.1.0
 clean-text==0.6.0
-unidecode==1.3.8
+unidecode==1.4.0
 spacy==3.8.4
 torch==2.6.0
 transformers==4.50.2