v0.121.3

## What's Changed
* [docs] Update API reference docs by @github-actions[bot] in https://github.com/Agenta-AI/agenta/pull/7155
* feat(agents): Agenta tools available in every run by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/7152
* fix(ci): run preview tests from the commit the preview images were built from by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/7165
* fix(frontend): follow the agent's own commit on /m, and offer newer versions instead of adopting them by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/7154
* [7148] fix(runner): send Codex's gateway env to the Daytona sandbox by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/7156
* fix(api): verify Composio webhook signatures as base64 so event triggers fire by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/7168
* fix(runner): keep the Daytona snapshot under the 5 GB cap by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/7086
* [chore] Refresh featured blog posts by @mmabrouk in https://github.com/Agenta-AI/agenta/pull/6750
* [release] v0.121.3 by @github-actions[bot] in https://github.com/Agenta-AI/agenta/pull/7157


**Full Changelog**: https://github.com/Agenta-AI/agenta/compare/v0.121.2...v0.121.3