v4.1.13

## 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
* feat(image-gen): add Gemini 3 Pro Image (GA), hide discontinued preview (#13284) to release v4.1 by @justin-tahara in https://github.com/onyx-dot-app/onyx/pull/13289


**Full Changelog**: https://github.com/onyx-dot-app/onyx/compare/v4.1.12...v4.1.13