[Athena] Fix accuracy CI: disable cancel-in-progress

Accuracy workflows take >60 minutes. With cancel-in-progress: true,
every push to main cancels the running accuracy workflow, so it NEVER
completes. Change to cancel-in-progress: false so accuracy runs finish
even when new pushes arrive.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Yifan Sun

.github/workflows/accuracy-report.yml

@@ -7,7 +7,7 @@ on:
 
 concurrency:
   group: accuracy-report-${{ github.ref }}
-  cancel-in-progress: true
+  cancel-in-progress: false
 
 jobs:
   accuracy-report:

.github/workflows/h5-accuracy-report.yml

@@ -11,7 +11,7 @@ on:
 
 concurrency:
   group: h5-accuracy-report-${{ github.ref }}
-  cancel-in-progress: true
+  cancel-in-progress: false
 
 jobs:
   h5-accuracy-report: