build(deps): bump nltk from 3.8.1 to 3.9.1

Bumps [nltk](https://github.com/nltk/nltk) from 3.8.1 to 3.9.1.
- [Changelog](https://github.com/nltk/nltk/blob/develop/ChangeLog)
- [Commits](nltk/nltk@3.8.1...3.9.1)

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

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

requirements.txt

@@ -19,7 +19,7 @@ tensorflow-probability==0.24.0
 faster-whisper==1.0.3
 python-dotenv==1.0.1
 pyannote.audio==3.2.0
-nltk==3.8.1
+nltk==3.9.1
 torchvision
 ctranslate2==4.4.0
 pandas==2.2.2

setup.py

@@ -24,7 +24,7 @@
     "faster-whisper==1.0.3",
     "python-dotenv==1.0.1",
     "pyannote-audio==3.2.0",
-    "nltk==3.8.1",
+    "nltk==3.9.1",
     "torchvision",
     "ctranslate2==4.4.0",
     "pandas==2.2.2",
@@ -43,7 +43,7 @@
     "python-dotenv==1.0.1",
     "faster-whisper==1.0.3",
     "pyannote-audio==3.2.0",
-    "nltk==3.8.1",
+    "nltk==3.9.1",
     "torchvision",
     "ctranslate2==4.4.0",
     "pandas==2.2.2",