GitHub Actions: use "cyd test" for rerun step

.github/workflows/main.yml

@@ -55,8 +55,7 @@ jobs:
       run: cyd test "!Test::Core"
     - name: rerun cassandane failures noisily
       if: ${{ steps.cass1.outcome == 'failure' }}
-      working-directory: cassandane
-      run: setpriv --reuid=cyrus --regid=mail --clear-groups --inh-caps='-chown,-dac_override,-dac_read_search,-fowner,-fsetid,-kill,-setgid,-setuid,-setpcap,-linux_immutable,-net_bind_service,-net_broadcast,-net_admin,-net_raw,-ipc_lock,-ipc_owner,-sys_module,-sys_rawio,-sys_chroot,-sys_ptrace,-sys_pacct,-sys_admin,-sys_boot,-sys_nice,-sys_resource,-sys_time,-sys_tty_config,-mknod,-lease,-audit_write,-audit_control,-setfcap,-mac_override,-mac_admin,-syslog,-wake_alarm,-block_suspend,-audit_read,-cap_38,-cap_39,-cap_40' ./testrunner.pl -f pretty -j 8 --rerun
+      run: cyd test --no-slow -f pretty --rerun
     - name: collect logs
       if: always()
       run: cat /tmp/cass/*/conf/log/syslog