build(deps): bump ruby_llm from 1.3.1 to 1.6.3

[dependabot]

Bumps ruby_llm from 1.3.1 to 1.6.3.

Release notes

Sourced from ruby_llm's releases.

1.6.3

RubyLLM 1.6.3: Smarter Defaults & Easier Contributing 🎯

Maintenance release improving model temperature defaults and making it easier to contribute to the project.

🌡️ Models Now Use Their Own Temperature Defaults

We were overriding model defaults with temperature: 0.7 everywhere. But different models have different optimal defaults - why fight them?

# Before 1.6.3: Always forced temperature to 0.7
chat = RubyLLM.chat(model: 'claude-3-5-haiku')  # temperature: 0.7
Now: Models use their native defaults
chat = RubyLLM.chat(model: 'claude-3-5-haiku')  # temperature: (model's default)
chat = RubyLLM.chat(model: 'gpt-4.1-nano')      # temperature: (model's default)
You can still override when needed
chat = RubyLLM.chat(model: 'claude-3-5-haiku', temperature: 0.9)

Each provider knows the best default for their models. OpenAI might default to 1.0, Anthropic to something else - we now respect those choices. Fixes #349.

🤝 Easier Contributing: Overcommit Improvements

The RakeTarget pre-commit hook was making it difficult for contributors to submit PRs. As noted in discussion #335, the hook would run models:update which deleted models if you didn't have API keys for all providers!

# Removed from .overcommit.yml:
RakeTarget:
  enabled: true
  command: ['bundle', 'exec', 'rake']
  targets: ['models:update', 'models:docs', 'aliases:generate']

Now contributors can:

• Submit PRs without having all provider API keys
• Make targeted changes without unintended side effects
• Focus on their contributions without fighting the tooling

The model registry is now maintained centrally rather than requiring every contributor to have complete API access.

🧹 Additional Updates

• Test cassettes refreshed: All VCR cassettes updated for reliable testing
• Model registry updated: Latest models from all providers

Installation

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Commits

• 20bb0c5 Updated appraisal gemfiles
• 75e0d87 Bump version to 1.6.3
• 153aad7 Remove unnecessary comments
• 11c9f95 Updated models
• 3a904fd Remove RakeTarget from overcommit configuration
• 8ec45b6 Updated cassettes
• 1e30203 Remove default temperature, let models use their own defaults
• 5c824b1 Promote vision, audio, and document features
• 12a8c5b updated models and appraisal gemfiles
• 6bf7f03 Update docs navigation and simplify README
• Additional commits viewable in compare view

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[dependabot]

Superseded by #42.