chore(deps): refresh project dependencies

[Undertone0809]

Summary

• refresh Poetry-managed dependencies within the existing version constraints
• regenerate poetry.lock and requirements.txt
• preserve the public Python compatibility range (>=3.8.1,<4.0)
• constrain tokenizers<0.21 only on Python 3.8 to avoid an incompatible native wheel, while newer Python versions continue resolving newer releases
• make the LiteLLM factory test deterministic by mocking the provider call and asserting the generated request instead of depending on an external provider error

Why

The previous lock file was stale, but a blind refresh exposed two sources of instability:

1. Python 3.8 resolved tokenizers==0.21.0, whose native extension failed to import in CI.
2. The LiteLLM test called claude-2 without mocking and asserted a provider-specific error message, so upstream routing/error changes could fail the suite without a Promptulate regression.

This PR refreshes dependencies while preserving supported environments and removes the network/provider dependency from the unit test.

Validation

• poetry check --lock passed
• dependency installation passed
• 74 basic tests passed on Python 3.11
• Python 3.8 compatibility test passed with tokenizers==0.20.3
• Ruff format and lint checks passed
• source distribution and wheel builds passed
• repository CI matrix passed in all 12 combinations:
  • Ubuntu, macOS, Windows
  • Python 3.8, 3.9, 3.10, 3.11

Scope

No production API or user-facing behavior is intentionally changed. The functional changes are limited to dependency resolution and deterministic test isolation.

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Project	Deployment	Actions	Updated (UTC)
promptulate	Ready	Preview, Comment	Jul 14, 2026 5:38pm