Output stderr

Signed-off-by: Adam Fowler <adamfowler71@gmail.com>

Author: adam-fowler

.github/workflows/benchmark.yml

@@ -73,6 +73,7 @@ jobs:
           # and once to extract stderr
           BENCHMARK_STDERR=$(swift package benchmark baseline check main pull_request 2>&1)
           echo "exit-status=$?" >> $GITHUB_OUTPUT
+          echo "$BENCHMARK_STDERR"
           echo "benchmark-error=$(echo -e "$BENCHMARK_STDERR" | grep -e "^error: .*" | tail -n 1 | cut -c 8-)" >> $GITHUB_OUTPUT
           set -e
       - name: Pull request comment text