build(deps): bump nltk from 3.8.1 to 3.9

Bumps [nltk](https://github.com/nltk/nltk) from 3.8.1 to 3.9.
- [Changelog](https://github.com/nltk/nltk/blob/develop/ChangeLog)
- [Commits](nltk/nltk@3.8.1...3.9)

---
updated-dependencies:
- dependency-name: nltk
  dependency-type: direct:production
...

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

requirements.txt

@@ -10,7 +10,7 @@ isodate == 0.6.1
 lxml == 5.1.0
 mcstatus == 11.1.1
 multidict == 6.0.5
-nltk == 3.8.1
+nltk == 3.9
 psutil == 5.9.8
 py-irclib == 0.3.0
 pyowm == 3.3.0