Bump nltk from 3.9.1 to 3.9.3 in /requirements

[dependabot]

Bumps nltk from 3.9.1 to 3.9.3.

Changelog

Sourced from nltk's changelog.

Version 3.9.3 2026-02-21

• Fix CVE-2025-14009: secure ZIP extraction in nltk.downloader (#3468)
• Block path traversal/arbitrary reads in nltk.data for protocol-less refs (#3467)
• Block path traversal/abs paths in corpus readers and FS pointers (#3479, #3480)
• Validate external StanfordSegmenter JARs using SHA256 (#3477)
• Add optional sandbox enforcement for filestring() (#3485)
• Maintenance: downloader/zipped models, CI/tooling updates

Thanks to the following contributors to 3.9.3: Chris Clauss, Eric Kafe, HyperPS, purificant, Shivansh-Game, Christopher Smith

Version 3.9.2 2025-10-01

• Update download checksums to use SHA256 in built index
• Fix percentage escape in new-style string formatting
• replace shortened URLs using goo.gl
• Make Wordnet interoperable with various taggers and tagged corpora
• Fix saving PerceptronTagger
• Document how to reproduce old Wordnet studies
• properly initialize Portuguese corpus reader
• support for mixed rules conversion into Chomsky Normal Form
• only import tkinter if a GUI is needed
• issue #2112 with Corenlp
• new environment variable NLTK_DOWNLOADER_FORCE_INTERACTIVE_SHELL
• Lesk defaults to most frequent sense in case of ties

Thanks to the following contributors to 3.9.2: Jose Cols, Peter de Blanc, GeneralPoxter, Eric Kafe, William LaCroix, Jason Liu, Samer Masterson, Mike014, purificant, Andrew Ernest Ritz, samertm, Ikram Ul Haq, Christopher Smith, Ryan Mannion

Version 3.9.1 2024-08-19

• Fixed bug that prevented wordnet from loading

Version 3.9 2024-08-18

• Fix security vulnerability CVE-2024-39705 (breaking change)
• Replace pickled models (punkt, chunker, taggers) by new pickle-free "_tab" packages
• No longer sort Wordnet synsets and relations (sort in calling function when required)
• Only strip the last suffix in Wordnet Morphy, thus restricting synsets() results
• Add Python 3.12 support
• Many other minor fixes

Thanks to the following contributors to 3.8.2: Tom Aarsen, Cat Lee Ball, Veralara Bernhard, Carlos Brandt, Konstantin Chernyshev, Michael Higgins, Eric Kafe, Vivek Kalyan, David Lukes, Rob Malouf, purificant, Alex Rudnick, Liling Tan, Akihiro Yamazaki.

Version 3.8.1 2023-01-02

• Resolve RCE vulnerability in localhost WordNet Browser (#3100)

... (truncated)

Commits

• 4154eb8 Merge pull request #3503 from ekaf/hotfix-3501
• 7a710cb Prepare release 3.9.3
• 1056b32 Merge pull request #3468 from HyperPS/fix/secure-unzip-rce
• 7dc5baa Resolve merge conflict in tag mapping using normalized nltk resource URL
• 7ef38b8 Merge pull request #3467 from HyperPS/develop
• b2e1164 Merge pull request #3485 from HyperPS/fix-filestring-sandbox-update
• ac0ce55 Merge pull request #3480 from HyperPS/fix/filesystem-sandbox-security
• 603e34d Merge pull request #3479 from HyperPS/fix/corpusreader-path-traversal
• b63a501 Merge pull request #3477 from HyperPS/fix/stanford-segmenter-rce-sha256
• df38955 Merge pull request #3494 from ekaf/ewnv
• Additional commits viewable in compare view

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[dependabot]

Superseded by #18.