Update baseline time and memory in benchmark workflow

Author: louis-e

.github/workflows/pr-benchmark.yml

@@ -65,7 +65,7 @@ jobs:
           seconds=$((duration % 60))
           peak_mem=${{ steps.benchmark.outputs.peak_memory }}
 
-          baseline_time=135
+          baseline_time=69
           diff=$((duration - baseline_time))
           abs_diff=${diff#-}
 
@@ -79,7 +79,7 @@ jobs:
             verdict="🚨 This PR **drastically worsens generation time**."
           fi
 
-          baseline_mem=5865
+          baseline_mem=935
           mem_annotation=""
           if [ "$peak_mem" -gt 2000 ]; then
             mem_diff=$((peak_mem - baseline_mem))