Updates for release prep

[joerunde]

For multi-spyre support we need a newer build of the base image. This has been synced to quay.io/ibm-aiu/base and validated with tensor parallel tests.

Once this is in we can cut a new release, and the resulting image should work with tensor parallel inferencing.

[github-actions]

👋 Hi! Thank you for contributing to vLLM support on Spyre.
Just a reminder: Make sure that your code passes all the linting checks, otherwise your PR won't be able to be merged. To do so, first install the linting requirements, then run format.sh and commit the changes. This can be done with uv directly:

uv sync --frozen --group lint --active --inexact

Or this can be done with pip:

uv pip compile --group lint > requirements-lint.txt
pip install -r requirements-lint.txt
bash format.sh

Now you are good to go 🚀

[rafvasq]

LGTM