add Jcon slovenia to list, and remove past events

_data/events.yaml

@@ -2,42 +2,6 @@ headline: "Select Upcoming Events"
 
 upcomingevents:
 
-- title: "test"
-  type: test
-  link: https://quarkus.io/
-  date: 2024-02-04
-  displaydate: "test"
-  location: test
-  description:  Test
-  thumbnail: default_logo.png
-
-- title: "DEV World"
-  type: In Person
-  link: https://github.com/quarkusio/quarkus/discussions/36904
-  date: 2024-03-01
-  displaydate: "February 29 - March 1, 2024"
-  location: Amsterdam, Netherlands
-  description:  Europe's Leading Tech City will offer a 2 Day Festival of Tech with Developers from around the Planet, the must attend event for you and your whole Tech Team to attend.
-  thumbnail: devworld_logo.png
-
-- title: "KubeCon Europe"
-  type: In Person
-  link: https://github.com/quarkusio/quarkus/discussions/38536
-  date: 2024-03-01
-  displaydate: "March 19-22, 2024"
-  location: Paris, France
-  description: The Cloud Native Computing Foundation’s flagship conference gathers adopters and technologists from leading open source and cloud native communities.
-  thumbnail: kubconeu_2024.png
-
-- title: "Microsoft JDConf"
-  type: Virtual
-  link: https://github.com/quarkusio/quarkus/discussions/38537
-  date: 2024-03-28
-  displaydate: "March 27-28, 2024"
-  location: 
-  description: JDConf, a key event in the Java landscape, is returning in 2024 for an exceptional two-day virtual experience. Our mission is to provide a world-class, engaging event accessible to attendees from every corner of the globe. With each year, JDConf has expanded its content and global reach, now drawing thousands of live viewers worldwide and fostering a network of local community events.
-  thumbnail: jdconf_2024.png
-
 - title: "DevNexus"
   type: In Person
   link: https://github.com/quarkusio/quarkus/discussions/38538
@@ -65,4 +29,13 @@ upcomingevents:
   description:  Red Hat® Summit and AnsibleFest bring together IT professionals, customers, partners, and peers to provide you the tools, connections, and knowledge to support your technology goals.
   thumbnail: redhatsummit_logo.png
 
+- title: "The MakeIT 2024 & JCON OpenBlend Slovenia 2024 - Quarkus Track"
+  type: In Person
+  link: https://quarkus.io/
+  date: 2024-05-29
+  displaydate: "May 29-30, 2024"
+  location: Convention Centre Portus, Portorož, Slovenia
+  description:  We are excited to announce that JCON OpenBlend Slovenia 2024 will be hosting over 20 engineers from the core Quarkus development team.
+  thumbnail: jconopenblend_2024.png
+