Increase LLM-benchmark timeout to 6 hour

Author: JulienLavocat

.github/workflows/llm-benchmark-periodic.yml

@@ -50,7 +50,7 @@ concurrency:
 jobs:
   run-benchmarks:
     runs-on: spacetimedb-new-runner-2
-    timeout-minutes: 180
+    timeout-minutes: 360
 
     steps:
       - name: Checkout repository