update cfp status color (#1092)

Co-authored-by: scraly <2543381+scraly@users.noreply.github.com>

README.md

@@ -140,7 +140,7 @@ All the data (past and coming) are available publicly in JSON:
 * 21-23: [KubeCon + CloudNativeCon + Open Source Summit + AI dev China 2024](https://events.linuxfoundation.org/kubecon-cloudnativecon-open-source-summit-ai-dev-china/) - Hong Kong (China) <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-open-source-summit-ai-dev-china/program/call-for-proposal/"><img alt="CFP KubeCon + CloudNativeCon + Open Source Summit + AI_dev China 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2005-May-2024&color=red"></a> <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-open-source-summit-ai-dev-china/attend/scholarships/"><img alt="Scholarship" src="https://img.shields.io/static/v1?label=Scholarship&message=until%2023-June-2024&color=yellow" /></a>
 * 21-22: [DevOpsDays Halifax](https://devopsdays.org/events/2024-halifax/welcome/) - Halifax, NS (Canada) <a href="https://talks.devopsdays.org/devopsdays-halifax-2024/cfp"><img alt="CFP DevOpsDays Halifax" src="https://img.shields.io/static/v1?label=CFP&message=until%2031-March-2024&color=red"></a>
 * 21-24: [Hands On Testing 2024](https://handsontesting.com/) - Online <a href="https://sessionize.com/hands-on-testing-2024"><img alt="CFP Hands On Testing 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2030-April-2024&color=red"></a>
-* 22: [Conf42 Rustlang 2024](https://www.conf42.com/rustlang-2024) - Online <a href="https://www.papercall.io/conf42-rustlang-2024"><img alt="CFP Conf42 Rustlang 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2022-July-2024&color=green"></a>
+* 22: [Conf42 Rustlang 2024](https://www.conf42.com/rustlang-2024) - Online <a href="https://www.papercall.io/conf42-rustlang-2024"><img alt="CFP Conf42 Rustlang 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2022-July-2024&color=red"></a>
 * 22: [DevOps & Agile Summer Retreat](https://devops.lv/) - Riga (Latvia) <a href="https://www.papercall.io/summer-retreat"><img alt="CFP DevOps & Agile Summer Retreat" src="https://img.shields.io/static/v1?label=CFP&message=until%2030-June-2024&color=red"></a>
 * 24: [DevOpsDays Rio de Janeiro](https://devopsdays.org/events/2024-rio-de-janeiro) - Rio de Janeiro, RJ (Brazil) <a href="https://www.papercall.io/devopsdaysrio2024"><img alt="CFP Devopsdays Rio De Janeiro 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2026-May-2024&color=red"></a>
 * 24: [HackBahia](https://hackbahia.github.io) - Salvador (Brazil) <a href="https://www.papercall.io/hackbahia2024"><img alt="CFP HackBahia" src="https://img.shields.io/static/v1?label=CFP&message=until%2015-June-2024&color=red"></a>