Upgrade Schema library to fix prior formatting issue [don't merge]

[sritchie]

This PR upgrades Schema... but in doing so I found another bug.

https://github.com/keleshev/schema/issues/240

This is serious enough that we shouldn't merge until this is fixed and we upgrade again. I'll make a comment inline noting what the problem is.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

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Additional details and impacted files

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  Coverage        ?   52.85%           
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  Files           ?       33           
  Lines           ?     3557           
  Branches        ?        0           
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  Hits            ?     1880           
  Misses          ?     1677           
  Partials        ?        0           

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