build(deps-dev): update gunicorn requirement from <24.0,>=23.0 to >=23.0,<26.0 in the optional group

[dependabot]

Updates the requirements on gunicorn to permit the latest version.
Updates gunicorn to 25.1.0

Release notes

Sourced from gunicorn's releases.

Gunicorn 25.1.0

New Features

• Control Interface (gunicornc): Add interactive control interface for managing running Gunicorn instances, similar to birdc for BIRD routing daemon ([PR #3505](benoitc/gunicorn#3505))

  • Unix socket-based communication with JSON protocol
  • Interactive mode with readline support and command history
  • Commands: show all/workers/dirty/config/stats/listeners
  • Worker management: worker add/remove/kill, dirty add/remove
  • Server control: reload, reopen, shutdown
  • New settings: --control-socket, --control-socket-mode, --no-control-socket
  • New CLI tool: gunicornc for connecting to control socket
  • See Control Interface Guide for details

• Dirty Stash: Add global shared state between workers via dirty.stash ([PR #3503](benoitc/gunicorn#3503))

  • In-memory key-value store accessible by all workers
  • Supports get, set, delete, clear, keys, and has operations
  • Useful for sharing state like feature flags, rate limits, or cached data

• Dirty Binary Protocol: Implement efficient binary protocol for dirty arbiter IPC using TLV (Type-Length-Value) encoding ([PR #3500](benoitc/gunicorn#3500))

  • More efficient than JSON for binary data
  • Supports all Python types: str, bytes, int, float, bool, None, list, dict
  • Better performance for large payloads

• Dirty TTIN/TTOU Signals: Add dynamic worker scaling for dirty arbiters ([PR #3504](benoitc/gunicorn#3504))

  • Send SIGTTIN to increase dirty workers
  • Send SIGTTOU to decrease dirty workers
  • Respects minimum worker constraints from app configurations

Changes

• ASGI Worker: Promoted from beta to stable
• Dirty Arbiters: Now marked as beta feature

Documentation

• Fix Markdown formatting in /configure documentation

Commits

• 2d43101 docs: merge gunicornc into 25.1.0 release
• bf4ad8d docs: update 25.1.0 release date to 2026-02-13
• 730350e Merge pull request #3505 from benoitc/feature/gunicornc-control-interface
• 63df19b fix(tests): use process groups for reliable signal handling in PyPy
• cd77bcc fix(tests): increase wait time for all server tests
• 02ea985 fix(tests): improve server test reliability on FreeBSD
• 6d81c9e fix: resolve pylint warnings
• 7486baa fix: remove unused imports
• 3e60d29 docs: add gunicornc control interface guide
• e05e40d feat(ctl): add message-based dirty worker management
• Additional commits viewable in compare view

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[jochenklar]

@dependabot rebase