Update OpenAI models

[radanskoric]

The changes were generated by running
rake models:update with a valid
OpenAI key.

There was no need to update capabilities since
5.2. capabilities match those of 5.1. which is
already supported.

What this does

Updates OpenAI models' info. Mainly, to add support for GPT-5.2.

The changes were generated by running
rake models:update with a valid
OpenAI key.

There was no need to update capabilities since
5.2. capabilities match those of 5.1. which is
already supported.

Type of change

• Bug fix
• New feature
• Breaking change
• Documentation
• Performance improvement

Separate note: New feature is closest but I was really looking for a straightforward: model update checkbox.

Scope check

• I read the Contributing Guide
• This aligns with RubyLLM's focus on LLM communication
• This isn't application-specific logic that belongs in user code
• This benefits most users, not just my specific use case

Quality check

• I ran overcommit --install and all hooks pass
• I tested my changes thoroughly
  • For provider changes: Re-recorded VCR cassettes with bundle exec rake vcr:record[provider_name]
  • All tests pass: bundle exec rspec
• I updated documentation if needed
• I didn't modify auto-generated files manually (models.json, aliases.json)

API changes

• Breaking change
• New public methods/classes
• Changed method signatures
• No API changes

Related issues

None.

[radanskoric]

Draft because I'm investigating: rake models:update did something wrong, it removed way too much. Probably has something to do with how I gave it only OpenAI key.

[radanskoric]

This PR is super-seeded by my other PR: #543

In there I fixed the bug caused the issue in this PR and also ran models update from Parsera. This pulled in all the needed OpenAI changes. Updating with a valid OpenAI key doesn't produce any changes, meaning OpenAI is already up to date just with Parsera data.