fix: Relax openai and pydantic pins to match vllm requirements

[devin-ai-integration]

^{CI (internal): [#72738572](http://tritonserver.local/ci/pipelines/72738572)}

What does the PR do?

• Cherry-picks 6dc3ff1e from mchornyi/TRI-1959/1.0dev to main.
• python/openai/requirements.txt: openai==1.107.3 -> openai>=2.25.0,<3.
• src/python/pyproject.toml: pydantic==2.10.6 -> pydantic>=2.12.0,<3.
• Exact pins downgraded both packages in the vllm image, so tool_parsers failed to import NamespaceTool and the vllm model could not load.

Checklist

• PR title reflects the change and is of format <commit_type>: <Title>
• Changes are described in the pull request.
• Related issues are referenced.
• Populated github labels field
• Added test plan and verified test passes.
• Verified that the PR passes existing CI.
• Verified copyright is correct on all changed files.
• Added succinct git squash message before merging ref.
• All template sections are filled out.

Commit Type:

• fix

Related PRs:

• fix: Support vllm>=0.30 bucket helper relocation in metrics vllm_backend#138

Where should the reviewer start?

python/openai/requirements.txt, src/python/pyproject.toml

Test plan:

• vLLM L0 jobs pass on the default branch.

• CI Pipeline ID: 72738572

Caveats:

Only 6dc3ff1e is ported; the 26.09 release-line commits are not.

Related Issues:

• Resolves: TRI-2007

[devin-ai-integration]

I'll fix CI failures and address comments from users with write access. I'll skip comments containing "(aside)".

• Disable automatic comment, CI, and merge conflict monitoring

[greptile-apps]

Confidence Score: 5/5

[High impact] The PR appears safe to merge; no actionable issue was found.

Summary

This PR replaces two exact dependency pins with ranges that match vLLM's stated requirements.

• The Python packages can use dependency versions vLLM requires.

_{Reviews (1) · Last reviewed commit: "fix: Relax openai and pydantic pins to m..." · Reviewed by Greptile}