Enhancement : Add banner for upcoming JSON-schema event at API Day Paris

[aialok]

Description
While exploring the CNCF landscape, I noticed that when we open it, a banner pops up from the bottom about recent events of the CNCF Foundation.
we can also include one banner in our landscape for our upcoming event, the JSON Schema In-Person Summit at API Days Paris. It will help us promote our conference.

We can add this here :

[github-actions]

Hello! 👋

This issue has been automatically marked as stale due to inactivity 😴

It will be closed in 180 days if no further activity occurs. To keep it active, please add a comment with more details.

There can be many reasons why a specific issue has no activity. The most probable cause is a lack of time, not a lack of interest.

Let us figure out together how to push this issue forward. Connect with us through our slack channel : https://json-schema.org/slack

Thank you for your patience ❤️