Include the comment time into the linter message

## Need

```gherkin
In order to know if the linting message is at its most recent version
As a programmer
I want to know the time it was generated
```

The bot is not a spammer. It will edit the same message over and over again.
This means we can't tell what is the last time the linter was ran

##  Solution
Print the pull request last update time when the script is ran