using a temp file

prior run was failing. might be due to persisting the old file.

.github/workflows/bench.yml

@@ -34,16 +34,17 @@ jobs:
 
       - name: Get data and update file
         run: |
-          OUTPUT="$(node ./utils/GenerateLatestData.js 2>err.txt)"
-          FILE="err.txt"
-          if [[ -f "$FILE" ]]; then
+          TEMP_FILE=$(mktemp)
+          OUTPUT="$(node ./utils/GenerateLatestData.js 2>$TEMP_FILE)"
+
+          if [[ -f "$TEMP_FILE" ]]; then
             # Read the file contents and echo them so they are captured by the GitHub Actions runner
             while read -r line; do
                 echo "$line"
-            done < "$FILE"
+            done < "$TEMP_FILE"
 
             # Delete the file
-            rm "$FILE"
+            rm "$TEMP_FILE"
             exit 1
           elif [ -n "$OUTPUT" ]; then
             echo "$OUTPUT" > ./website/public/data/latest.json