Bump nltk in /ai/generative-ai-service/hr-goal-alignment/files

Bumps [nltk](https://github.com/nltk/nltk) from 3.9.1 to 3.9.4.
- [Changelog](https://github.com/nltk/nltk/blob/develop/ChangeLog)
- [Commits](nltk/nltk@3.9.1...3.9.4)

---
updated-dependencies:
- dependency-name: nltk
  dependency-version: 3.9.4
  dependency-type: direct:production
...

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

Author: dependabot[bot]

ai/generative-ai-service/hr-goal-alignment/files/requirements.txt

@@ -53,7 +53,7 @@ mypy-extensions==1.0.0
 narwhals==1.32.0
 nest-asyncio==1.6.0
 networkx==3.4.2
-nltk==3.9.1
+nltk==3.9.4
 numpy==2.2.4
 oci==2.149.1
 olefile==0.47