agent-platform release v4.154.0

Added

• (klaus-gateway) Egress refusal notices in Slack, klaus-gateway 4.11 in #1153 by @teemow
• (muster) Tenants.organizations.enabled turns on muster’s MCP servers per tenant in #1150 by @fiunchinho

Full Changelog: https://github.com/giantswarm/agent-platform/compare/v4.153.0...v4.154.0