ci: use sudo to run tests on macos
according to some folklore, sudo is required to get core dumps. sadly we
haven't been able to test if its required.
@@ -126,7 +126,7 @@ jobs:
sudo touch /cores/test || { ls -ld /cores; exit 1; }
sudo rm /cores/test
retval=0
- cargo test --workspace || retval=$?
+ sudo cargo test --workspace || retval=$?
sudo chmod -R a+rwx /cores
exit $retval
