backstage release v2.89.0

Added

• (agent-platform) Render files attached to a session’s messages by @QuentinBisson — On a session’s page, an image attached to a message shows inline and opens at full size when selected. Any other file shows as a chip with its name, type and size.
• (gs) Read the Installations page’s versions in one request by @teemow — The Installations page reads its Kubernetes version and Release columns in one request: all rows fill within seconds instead of one by one, and at once from the cache on a revisit.

Full Changelog: https://github.com/giantswarm/backstage/compare/v2.88.0...v2.89.0