Separate model and feature support matrices by category (#1100)

Signed-off-by: Teresa Chen <boe20211@gmail.com>

Author: boe20211

.buildkite/scripts/generate_support_matrices.sh

@@ -136,8 +136,8 @@ done
 for csv_file in "${feature_csv_files[@]}"; do
     if [[ -f "$csv_file" ]]; then
         echo "--- $csv_file ---"
-        sorted_content=$(cat "$csv_file" | tail -n +2 | sort -V)
-        header=$(cat "$csv_file" | head -n 1)
+        sorted_content=$(tail -n +2 "$csv_file" | sort -V)
+        header=$(head -n 1 "$csv_file")
         echo "$header" > "$csv_file"
         echo "$sorted_content" >> "$csv_file"