MiniGovernance's senate has almost unlimited validity
A new senate for the MiniGovernance contract is set in the following line:\\n```\\nGEM.\\_setSenate(newSenate, block.timestamp + SENATE\\_VALIDITY);\\n```\\n\\nThe validity period argument should not include `block.timestamp`, because it is going to be added a bit later in the code:\\n```\\nself.SENATE\\_EXPIRY = block.timestamp + \\_senatePeriod;\\n```\\n\\nSo currently, every senate of MiniGovernance will have much longer validity than it is supposed to.
Pass onlySENATE_VALIDITY in the `_refreshSenate` function.
```\\nGEM.\\_setSenate(newSenate, block.timestamp + SENATE\\_VALIDITY);\\n```\\n