🚀 Describe the new functionality needed

Context: As per ashwinb's comment about adding Bedrock integration tests to CI.

could we add them to CI? we could introduce a new job for this which does provider specific integration tests -- and you could include which credentials are needed and how are they to be obtained if someone does need to re-record things. Curious to hear what others think.

Allow to add more recordings or update existing.

💡 Why is this needed? What if we don't build it?

Current Problem

The Bedrock provider integration test recordings (added in PR #3748) are being flagged as "unused" by scripts/cleanup_recordings.py because:

1. The cleanup script only recognizes tests that run in the CI matrix (tests/integration/ci_matrix.json)
2. Current CI matrix only includes: ollama, ollama-vision, gpt, and vllm
3. Bedrock recordings exist but Bedrock tests don't run in CI → recordings marked for deletion

Proposed Solution

Implement a provider-specific CI workflow for Bedrock that:

• Runs in replay mode on PRs (no credentials needed using committed recordings)

Other thoughts

Please provide feedback or comments or any questions you may have here.