Bump version to 11.8.5 and update changelog

[Copilot]

This PR increments the Clarifai Python SDK version from 11.8.4 to 11.8.5 and updates the changelog to document recent changes since the last release.

Changes Made

Version Update:

• Updated clarifai/__init__.py from version 11.8.4 to 11.8.5

Changelog Update:
Added a new section for version 11.8.5 documenting the following change merged since 2025-10-18:

• Added optional protobuf response information in pythonic models with parameter validation (#810)

Validation

The version bump has been validated to ensure proper functionality:

$ python -c "import clarifai; print(f'Version: {clarifai.__version__}')"
Version: 11.8.5

This follows the established pattern from previous version bump PRs (such as #731) and ensures the SDK version accurately reflects the latest improvements and fixes.

About the New Feature

The new version includes support for optionally returning both processed results and raw protobuf responses in pythonic models. This enhancement allows users to access additional metadata such as status codes, request IDs, and performance metrics while maintaining backward compatibility.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Bump version and changelog</issue_title>
<issue_description>Please increment the latest version and update changelog.md for the recent changes. See #731 as an example PR that did this in the past.</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #813

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[github-actions]

Package	Line Rate	Health
clarifai	43%	❌
clarifai.cli	44%	❌
clarifai.cli.templates	33%	❌
clarifai.client	67%	➖
clarifai.client.auth	67%	➖
clarifai.constants	100%	✔
clarifai.datasets	100%	✔
clarifai.datasets.export	80%	✔
clarifai.datasets.upload	75%	➖
clarifai.datasets.upload.loaders	37%	❌
clarifai.models	100%	✔
clarifai.modules	0%	❌
clarifai.rag	72%	➖
clarifai.runners	53%	➖
clarifai.runners.models	58%	➖
clarifai.runners.pipeline_steps	41%	❌
clarifai.runners.pipelines	70%	➖
clarifai.runners.utils	62%	➖
clarifai.runners.utils.data_types	72%	➖
clarifai.schema	100%	✔
clarifai.urls	60%	➖
clarifai.utils	60%	➖
clarifai.utils.evaluation	67%	➖
clarifai.workflows	95%	✔
Summary	61% (8119 / 13219)	➖

Minimum allowed line rate is 50%