adding circleCI and peoplecert as gold, upgrading honeycomb to platinum (#15101)

Author: ecology-chris

data/events/2025/atlanta/main.yml

@@ -98,7 +98,7 @@ sponsors:
   - id: spacelift
     level: gold
   - id: honeycomb
-    level: gold
+    level: platinum
   - id: fianu
     level: gold
   - id: chef
@@ -113,6 +113,10 @@ sponsors:
     level: gold
   - id: flox
     level: gold
+  - id: circleci
+    level: gold
+  - id: peoplecert
+    level: gold
   - id: redmonk
     level: community
   - id: shadow-soft
@@ -133,6 +137,8 @@ sponsors_accepted : "yes" # Whether you want "Become a XXX Sponsor!" link
 # unlimited sponsors, omit the max attribute or set it to 0. If you want to prevent all
 # sponsorship for a specific level, it is best to remove the level.
 sponsor_levels:
+  - id: platinum
+    label: platinum
   - id: gold
     label: Gold
 #    max: 10