Bump lxml from 4.9.3 to 5.2.0 in /bot

Bumps [lxml](https://github.com/lxml/lxml) from 4.9.3 to 5.2.0.
- [Release notes](https://github.com/lxml/lxml/releases)
- [Changelog](https://github.com/lxml/lxml/blob/master/CHANGES.txt)
- [Commits](lxml/lxml@lxml-4.9.3...lxml-5.2.0)

---
updated-dependencies:
- dependency-name: lxml
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

bot/requirements.txt

@@ -2,7 +2,7 @@ aiohttp==3.9.0
 asyncpg==0.29.0
 beautifulsoup4==4.12.2
 discord.py==2.3.2
-lxml==4.9.3
+lxml==5.2.0
 pysaucenao==1.6.2
 tracemoe-py==1.0.3
 waifu-py==1.0.3