Revert "disable rerun-failures"

This reverts commit 329f36e.

Author: asottile-sentry

.github/actions/setup-sentry/action.yml

@@ -78,7 +78,7 @@ runs:
 
         ### pytest configuration ###
         echo "PY_COLORS=1" >> "$GITHUB_ENV"
-        echo "PYTEST_ADDOPTS=--durations=10 --fail-slow=60s" >> $GITHUB_ENV
+        echo "PYTEST_ADDOPTS=--reruns=5 --durations=10 --fail-slow=60s" >> $GITHUB_ENV
         echo "COVERAGE_CORE=sysmon" >> "$GITHUB_ENV"
 
         ### pytest-sentry configuration ###