update cfp status color (#1145)

Co-authored-by: scraly <[email protected]>

README.md

@@ -337,7 +337,7 @@ All the data (past and coming) are available publicly in JSON:
 * 28-30: [GovAI Summit 2024](https://www.govaisummit.com/) - Arlington, VA (USA) <a href="https://sessionize.com/gnrt-ai-2024/"><img alt="CFP VOICE & AI / GovAI Summit 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2031-March-2024&color=red"></a>
 * 28-30: [KanDDDinsky 2024](https://kandddinsky.com) - Berlin (Germany) <a href="https://sessionize.com/kandddinsky-2024"><img alt="CFP KanDDDinsky 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2031-March-2024&color=red"></a>
 * 29: [DevOpsDays Bogotá 2024](https://devopsdays.org/events/2024-bogota/welcome/) - Bogotá (Colombia) <a href="https://www.papercall.io/devopsdaysbogota2024"><img alt="CFP DevOpsDays Bogotá 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2001-September-2024&color=red"></a>
-* 29: [GroupBy 2024](https://groupby.org/) - Online <a href="https://sessionize.com/groupby-2024/"><img alt="CFP GroupBy 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2017-September-2024&color=green"></a>
+* 29: [GroupBy 2024](https://groupby.org/) - Online <a href="https://sessionize.com/groupby-2024/"><img alt="CFP GroupBy 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2017-September-2024&color=red"></a>
 * 29-30: [GitHub Universe 2024](https://githubuniverse.com/#next) - San Francisco, CA (USA) <a href="https://reg.githubuniverse.com/flow/github/universe24/cfs/page/cfslandingpage"><img alt="CFP GitHub Universe 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2010-May-2024&color=red"></a>
 * 29-30: [#PragmaConf 2024](https://pragmaconference.com/) - Bologna (Italy) <a href="https://pragmaconference.com/speakers.html"><img alt="CFP PragmaConf 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2030-June-2024&color=red"></a>
 * 29-31: [MWC Kigali](https://www.mwckigali.com/) - Kigali (Rwanda)
@@ -442,7 +442,7 @@ All the data (past and coming) are available publicly in JSON:
 * 14-16: [TRG Con](https://www.trgcon.com/) - Madrid (Spain)
 * 14-16: [Meeting C++](https://meetingcpp.com/) - Berlin (Germany) <a href="https://meetingcpp.com/mcpp/submittalk/"><img alt="CFP Meeting C++ Berlin" src="https://img.shields.io/static/v1?label=CFP&message=until%2025-June-2024&color=red"></a>
 * 14-16: [HoneyCON24](https://honeycon.eu/) - Guadalajara (Spain) <a href="https://www.papercall.io/honeycon24"><img alt="CFP HoneyCON24" src="https://img.shields.io/static/v1?label=CFP&message=until%2011-October-2024&color=green"></a>
-* 15-16: [Droidcon Uganda 2024](https://www.uganda.droidcon.com/) - Kampala (Uganda) <a href="https://sessionize.com/droidcon-uganda-2024/"><img alt="CFP Droidcon Uganda 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2017-September-2024&color=green"></a>
+* 15-16: [Droidcon Uganda 2024](https://www.uganda.droidcon.com/) - Kampala (Uganda) <a href="https://sessionize.com/droidcon-uganda-2024/"><img alt="CFP Droidcon Uganda 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2017-September-2024&color=red"></a>
 * 16: [DevFest London](https://gdg.community.dev/events/details/google-gdg-london-presents-devfest-london-2024/cohost-gdg-cloud-london) - London (UK) <a href="https://sessionize.com/devfest-london-2024"><img alt="CFP DevFest London 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2012-October-2024&color=green"></a>
 * 16: [DevFest Ireland 2024](https://gdg.community.dev/events/details/google-gdg-belfast-presents-devfest-ireland-2024/) - Belfast (UK) <a href="https://sessionize.com/devfest-ireland-2024/"><img alt="CFP DevFest Ireland 2024" src="https://img.shields.io/static/v1?label=CFP&message=until%2031-August-2024&color=red"></a>
 * 16: [DevOpsDays Florianópolis](https://devopsdays.org/events/2024-florianopolis/welcome/) - Florianópolis (Brazil) <a href="https://www.papercall.io/devopsdays-fln-2024"><img alt="CFP DevOpsDays Florianópolis" src="https://img.shields.io/static/v1?label=CFP&message=until%2025-August-2024&color=red"></a>