bug: Regression in Humanize with unicode accents

### Description

I have a failing test case in Hugo when trying to update from  0.3.0 to 1.0.1:

Input: `óbito`
Expected: `Óbito`
Got `Ã\xa3 bito`

https://github.com/gohugoio/hugo/pull/10751

### To Reproduce

_No response_

### Additional Context



Details

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```
Paste the output of `buffalo info` here!
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