v4.7.9

## 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(whitelabeling): use the custom app name in every catalog string (#15049) to release v4.7 by @nmgarza5 in https://github.com/onyx-dot-app/onyx/pull/15056
* fix(tests): name models LiteLLM still knows in the model capability tests (v4.7 backport) by @rohoswagger in https://github.com/onyx-dot-app/onyx/pull/15064
* fix(mcp): single-flight SDK-driven OAuth refresh across concurrent tool calls (v4.7 backport) by @rohoswagger in https://github.com/onyx-dot-app/onyx/pull/15041
* fix: SharePoint libraries whose URL differs from their display name (#15058) to release v4.7 by @evan-onyx in https://github.com/onyx-dot-app/onyx/pull/15076
* fix(deployment): pull MinIO from our own Docker Hub mirror (#15086) to release v4.7 by @nmgarza5 in https://github.com/onyx-dot-app/onyx/pull/15088

**Full Changelog**: https://github.com/onyx-dot-app/onyx/compare/v4.7.8...v4.7.9