chore(deps): bump gitlab-ai-provider to 6.7.0

[vglafirov]

Issue for this PR

Closes #28221

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation
• Dependency bump

What does this PR do?

Bumps gitlab-ai-provider from 6.6.0 → 6.7.0 in packages/core and packages/opencode.

6.7.0 adds a single new model id, duo-chat-gpt-5-5, that maps to OpenAI's gpt-5.5-2026-04-23 backend reached through GitLab's AI Gateway proxy. The upstream model selection manifest (models.yml) marks gpt_5_5 with proxy_provider: openai, so it's already routable; this bump lets opencode users select gitlab/duo-chat-gpt-5-5 directly.

The change is purely additive inside the provider — no existing mappings touched, no public API change, no behavioral change for callers that don't reference the new id. Therefore the diff in this repo is mechanical: three lines across two package.json files and the matching bun.lock entry.

Provider release notes: https://gitlab.com/vglafirov/gitlab-ai-provider/-/releases (v6.7.0)

This follows the exact same pattern as previously closed #18850, which did the same bump for the GPT-5.4 family.

How did you verify your code works?

• bun install regenerated bun.lock cleanly — only the 6.6.0 → 6.7.0 entry + integrity hash changed.
• The pre-push hook ran bun typecheck across all 14 workspace packages — all passed (0 errors).
• Locally tested an opencode session against a project configured with model: gitlab/duo-chat-gpt-5-5; the model resolves and routes correctly through the OpenAI proxy under the GitLab AI Gateway, with streaming and tool-calls working as on prior duo-chat-gpt-5-* ids.
• No other dependencies were touched.

Screenshots / recordings

Not applicable — no UI changes.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

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[github-actions]

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[rekram1-node]

Oh our security policy is blocking the pkg due to minimum age restrictions:

error: No version matching "gitlab-ai-provider" found for specifier "6.7.0" (blocked by minimum-release-age: 259200 seconds)

We can either wait till it's up or add it to whitelist

[vglafirov]

Oh our security policy is blocking the pkg due to minimum age restrictions:

error: No version matching "gitlab-ai-provider" found for specifier "6.7.0" (blocked by minimum-release-age: 259200 seconds)

We can either wait till it's up or add it to whitelist

It's fine to wait