Add IA Data Day (#1280)

* Update README.md

* Update README.md

* Update README.md

---------

Co-authored-by: Aurelie Vache <scraly@gmail.com>

README.md

@@ -247,6 +247,7 @@ All the data (past and coming) are available publicly in JSON:
 * 19: [AWS Community Day Türkiye 2025](https://aws.cloudturkey.io/) - Istanbul (Turkey) <a href="https://www.papercall.io/aws-comday-tur-2025"><img alt="CFP AWS Community Day Türkiye 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2015-February-2025&color=green"></a>
 * 23-25: [MODERN ENDPOINT MANAGEMENT EMEA SUMMIT 2025](http://endpointsummit.com) - Paris (France) <a href="https://sessionize.com/MEMSummit2025"><img alt="CFP MODERN ENDPOINT MANAGEMENT EMEA SUMMIT 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2017-January-2025&color=green"></a>
 * 23-25: [PyCon DE & PyData 2025](https://2025.pycon.de/) - Darmstadt (Germany) <a href="https://pretalx.com/pyconde-pydata-2025/cfp"><img alt="CFP PyCon DE 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2005-January-2025&color=red"></a>
+* 24: [IA Data Day 2025](https://iadataday.capitale.dev/) - Strasbourg (France) <a href="https://conference-hall.io/ia-data-day-strasbourg-2025"><img alt="CFP IA Data Day 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2004-March-2025&color=green"></a>
 * 25-26: [Regional Scrum Gathering Dhaka 2025](http://www.dhakaregional.com) - Dhaka (Bangladesh) <a href="https://www.papercall.io/dhakaregional"><img alt="CFP Regional Scrum Gathering Dhaka 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2015-January-2025&color=green"></a>
 * 29: [NDC Melbourne 2025](https://ndcmelbourne.com) - Melbourne (Australia) <a href="https://sessionize.com/ndc-melbourne-2025"><img alt="CFP NDC Melbourne 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2017-November-2024&color=red"></a>
 * 29-30: [Devopsdays Aarhus](https://devopsdays.org/events/2025-aarhus) - Aarhus (Denmark) <a href="https://sessionize.com/devopsdays-aarhus-2025"><img alt="CFP Devopsdays Aarhus 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2011-January-2025&color=green"></a>