fix(ci): update concurrency rules

manually triggered jobs should no longer cancel
in-progress jobs running against the main branch

Signed-off-by: Nathan Weinberg <nweinber@redhat.com>

Author: nathan-weinberg

.github/workflows/redhat-distro-container.yml

@@ -31,7 +31,7 @@ on:
     - cron: '0 6 * * *'
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
 env: