Make tee ignore errors writing to a grep pipe

.github/workflows/deploy-gcp-tests.yml

@@ -698,7 +698,7 @@ jobs:
           docker logs \
           --tail ${{ env.EXTRA_LOG_LINES }} \
           ${{ inputs.test_id }} | \
-          tee /dev/stderr | \
+          tee --output-error=exit-nopipe /dev/stderr | \
           grep --max-count=1 --extended-regexp --color=always \
           'test result: .*ok.* [1-9][0-9]* passed.*finished in' && \
           exit $(docker wait ${{ inputs.test_id }}) \