[LA-2026] Adding new sponsors

Author: omargohan

data/events/2026/los-angeles/main.yml

@@ -136,7 +136,13 @@ sponsors:
     level: gold
   - id: devitjobs
     level: media
+  - id: dnsimple
+    level: gold
+  - id: ibm
+    level: gold
   - id: redhat
     level: gold
+  - id: terracotta-ai
+    level: gold
   - id: unleash
     level: gold