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]>

Author: dependabot[bot]

poetry.lock

@@ -56,7 +56,7 @@ graphene = "^2.0"
 graphql-core = "^2.0"
 gunicorn = "==22.0.0"
 lxml = "==4.9.1"
-nltk = "^3.8.1"
+nltk = "^3.9"
 numpy = "<2.0.0"
 opencensus-ext-azure = "==1.0.7"
 opencensus-ext-django = "==0.7.4"