[ci] Reset CW310 After all tests
[ci] Reset CW310 After all tests

this prevents losing access to the serial port that's been handed to
Docker

Signed-off-by: Drew Macrae <32d48ac45113625c0a04afe7343eae478a303684@google.com>

lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan,lowRISC/opentitan