Bump gtts from 2.5.1 to 2.5.2

Bumps [gtts](https://github.com/pndurette/gTTS) from 2.5.1 to 2.5.2.
- [Release notes](https://github.com/pndurette/gTTS/releases)
- [Changelog](https://github.com/pndurette/gTTS/blob/main/CHANGELOG.md)
- [Commits](pndurette/gTTS@v2.5.1...v2.5.2)

---
updated-dependencies:
- dependency-name: gtts
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -2,7 +2,7 @@
 asyncio==3.4.3
 aiohttp>=3.8.6
 # TTS
-gtts==2.5.1
+gtts==2.5.2
 pyttsx4==3.0.15
 mpyg321==2.2.1
 mutagen==1.47.0