added polycloud CFP (#1237)

README.md

@@ -295,7 +295,7 @@ All the data (past and coming) are available publicly in JSON:
 * 21-23: [Spring I/O](https://springio.net/) - Barcelona (Spain) <a href="https://2025.springio.net/"><img alt="CFP SPring IO 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2013-February-2025&color=green"></a>
 * 21-23: [KotlinConf 2025](https://kotlinconf.com) - Copenhagen (Denmark) <a href="https://sessionize.com/kotlinconf-2025/"><img alt="CFP KotlinConf 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2030-November-2024&color=red"></a>
 * 22-23: [CFCamp 2025](https://www.cfcamp.org/) - Munich (Germany) <a href="https://www.papercall.io/cfcamp2025"><img alt="CFP CFCamp 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2028-February-2025&color=green"></a>
-* 24: [Polycloud](https://polycloud.fr/) - Montpellier (France)
+* 24: [Polycloud](https://polycloud.fr/) - Montpellier (France) <a href="https://conference-hall.io/polycloud-2025"><img alt="Polycloud 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2020-February-2025&color=green"></a>
 * 26-28: [OWASP Global AppSec EU 2025 - CFT](https://ccib.es/) - Barcelona (Spain) <a href="https://sessionize.com/owasp-global-appsec-eu-2025-cft/"><img alt="CFP OWASP Global AppSec EU 2025 - CFT" src="https://img.shields.io/static/v1?label=CFP&message=until%2013-January-2025&color=green"></a>
 * 26-28: [Techorama 2025 Belgium](https://www.techorama.be) - Antwerp (Belgium) <a href="https://sessionize.com/techorama-2025-belgium/"><img alt="CFP Techorama 2025 Belgium" src="https://img.shields.io/static/v1?label=CFP&message=until%2023-January-2025&color=green"></a>
 * 27-28: [JNation](http://jnation.pt) - Coimbra (Portugal) <a href="https://sessionize.com/jnation-2025/"><img alt="CFP JNation 2025" src="https://img.shields.io/static/v1?label=CFP&message=until%2031-December-2024&color=green"></a>