List filter picks up any list containing the passed string

## Description
Running trira with a specific --list-reg exp picks up any list which has a match to the string passed.

## Expected Behavior
Should match exactly

## Actual Behavior
Matches any list which contains the passed string

## Steps to reproduce
- Create a list on a board with the title `Stuff`
- Create a list on a board with the title `Stuff and Things`
- Run trira dry run with --list-regexp "Stuff"

Cards from both lists will be picked up.