ref: show the 10 slowest tests in CI summary (#39915)

just so it's easy to see what's slow
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.github/actions/setup-sentry/action.yml

@@ -77,7 +77,7 @@ runs:
 
         ### pytest-sentry configuration ###
         echo "PYTEST_SENTRY_DSN=https://6fd5cfea2d4d46b182ad214ac7810508@sentry.io/2423079" >> $GITHUB_ENV
-        echo "PYTEST_ADDOPTS=--reruns 5" >> $GITHUB_ENV
+        echo "PYTEST_ADDOPTS=--reruns=5 --durations=10" >> $GITHUB_ENV
 
         # Configure a different release version, otherwise it defaults to the
         # commit sha which will conflict with our actual prod releases. This is a