fix: add event_name to concurrency group key for consistency

Aligns ci.yml concurrency group with the {workflow}-{event_name}-{ref}
pattern used across all other workflows.

Author: scottschreckengaust

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ permissions:
   statuses: none
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
+  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.ref }}
   cancel-in-progress: true
 
 jobs: