Bump prettytable from 3.6.0 to 3.9.0

Bumps [prettytable](https://github.com/jazzband/prettytable) from 3.6.0 to 3.9.0.
- [Release notes](https://github.com/jazzband/prettytable/releases)
- [Changelog](https://github.com/jazzband/prettytable/blob/main/CHANGELOG.md)
- [Commits](https://github.com/jazzband/prettytable/compare/3.6.0...3.9.0)

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

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

requirements.txt

@@ -2,7 +2,6 @@ asyncio==3.4.3
 colorama==0.4.6
 discord.py==2.2.2
 emoji==2.2.0
-prettytable==3.6.0
+prettytable==3.9.0
 psutil==5.9.4
-requests==2.32.4
-urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability
+requests==2.28.2