Update full_test_core_for_pr.yml

Shortend per task timeout for debugging.

Author: trevor-cai

.github/workflows/full_test_core_for_pr.yml

@@ -28,8 +28,9 @@ jobs:
     env:
       OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
       DEEPEVAL_TELEMETRY_OPT_OUT: 1
-      DEEPEVAL_DEBUG_ASYNC: "1"
+      DEEPEVAL_DEBUG_ASYNC: 1
       LOG_LEVEL: "info"
+      DEEPEVAL_PER_TASK_TIMEOUT_SECONDS: 120
 
     steps:
       - name: Resolve ref