v4.6.8

## Warning
Do not upgrade to this release if you want to preserve your existing indexed documents but have not yet run the document index migration, which can be done from any version v3.x. [See additional documentation here](https://docs.onyx.app/admins/advanced_configs/opensearch_document_index_migration#opensearch-document-index-migration).

See the assets to download this version and install.

## What's Changed
* fix(llm): send reasoning_effort=none for GPT-5.4+ tool calls over chat completions (#14603) to release v4.6 by @nmgarza5 in https://github.com/onyx-dot-app/onyx/pull/14611
* fix: keep disabled actions out of chat and unblock Chat Preferences toggles (#14627) to release v4.6 by @evan-onyx in https://github.com/onyx-dot-app/onyx/pull/14634
* fix(deployment): pull MinIO from quay.io and pin the latest release by digest (#14689) to release v4.6 by @onyx-cherry-pick[bot] in https://github.com/onyx-dot-app/onyx/pull/14691


**Full Changelog**: https://github.com/onyx-dot-app/onyx/compare/v4.6.7...v4.6.8