Fix CA regex

[lippytak]

So right now every CA user who DOES NOT have a positive SNAP AND Cash balance is getting the having_trouble_try_again_message response:

Here are our 50 most recent outbound texts on our main CA number:

The reason is that Twilio (or the provider) changed their transcription content to return 'zero dollars' instead of '$0.00' and our regex isn't catching these. Because in CA we're always looking for 2 matches (elsif regex_matches.count > 1), then if either balance transcription returns 'zero dollars' we just return having_trouble_try_again_message.

Example new transcription:

Balance is $243.28. Your cash account balance is zero dollars.
https://www.twilio.com/user/account/voice/log/transcriptions/TR318ef554ff99dcbe8b7191504685803c

SO, I think if we just start picking up 'zero dollars' in our CA handler regex then we should be all good.

[daguar]

👍 Moving to current sprint

[lippytak]

Two additional things:

• Since the issue is with the underlying Twilio transcription this is probably affecting all states, so we should update all handlers.
• Looks like this has been happening since late October, so we should brainstorm how to setup monitoring that catches similar cases in the future.

[daguar]

😭

[daguar]

Closed by #333 — adding this to other states is #334 and expanding this to values beyond zero is #335