backstage release v3.33.0

Added

• (muster) Say connector and use display names in sign-in prompts in #3384 by @marians
• (agent-platform) Only the annotation marks a namespace’s default model in #3390 by @QuentinBisson

Fixed

• Require Node ^24.17.0 so NODE_USE_ENV_PROXY reaches native fetch in #3388 by @marians

Full Changelog: https://github.com/giantswarm/backstage/compare/v3.32.1...v3.33.0