Update happy hour time for KubeCon (#16417)

Author: kimberleyamackenzie

content/kubecon/_index.md

@@ -43,7 +43,7 @@ detail_sections:
             icon: security
             icon_color: violet
             description: |
-              Join Pulumi, Buildkite, Oso, and Honeycomb for premium cocktails and stunning Atlanta skyline views at Glenn's Skylounge. Tuesday, November 11, 7-9 PM – the perfect KubeCon wind-down! 21+ only, first-come, first served.
+              Join Pulumi, Buildkite, Oso, and Honeycomb for premium cocktails and stunning Atlanta skyline views at Glenn's Skylounge. Tuesday, November 11, 8-10 PM – the perfect KubeCon wind-down! 21+ only, first-come, first served.
             link: https://buildkite.com/resources/events/25/kubecon-happy-hour/
             cta: RSVP to Happy Hour