Ensure that ecosystem check job fails if the tooling encounters an un…

…expected error (#8365)

Previously, `| tee` would hide bad exit codes from `ruff-ecosystem ...`

See poc failure at
https://github.com/astral-sh/ruff/actions/runs/6698487019/job/18200852648?pr=8365

.github/workflows/ci.yaml

@@ -215,6 +215,9 @@ jobs:
           # Make executable, since artifact download doesn't preserve this
           chmod +x ./ruff ${{ steps.ruff-target.outputs.download-path }}/ruff
 
+          # Set pipefail to avoid hiding errors with tee
+          set -eo pipefail
+
           ruff-ecosystem check ./ruff ${{ steps.ruff-target.outputs.download-path }}/ruff --cache ./checkouts --output-format markdown | tee ecosystem-result-check
 
           cat ecosystem-result-check > $GITHUB_STEP_SUMMARY
@@ -227,6 +230,9 @@ jobs:
           # Make executable, since artifact download doesn't preserve this
           chmod +x ./ruff ${{ steps.ruff-target.outputs.download-path }}/ruff
 
+          # Set pipefail to avoid hiding errors with tee
+          set -eo pipefail
+
           ruff-ecosystem format ./ruff ${{ steps.ruff-target.outputs.download-path }}/ruff --cache ./checkouts --output-format markdown | tee ecosystem-result-format
 
           cat ecosystem-result-format > $GITHUB_STEP_SUMMARY