How to reproduce:
1. `git clone https://github.com/rizinorg/book`
2. `quarto render --to pdf --toc`

This character "┌" (U+250C) occurs in [src/debugger/heap.md](https://github.com/rizinorg/book/blob/master/src/debugger/heap.md)

```
runnning pdflatex - 1
  This is pdfTeX, Version 3.141592653-2.6-1.40.22 (TeX Live 2021) (preloaded format=pdflatex)
   restricted \write18 enabled.
  entering extended mode
  
updating tlmgr

updating existing packages

compilation failed- error
Package inputenc Error: Unicode character ┌ (U+250C)
(inputenc)                not set up for use with LaTeX.

See the inputenc package documentation for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1722 \end{verbatim}
                      

Possible unsupported unicode character in this configuration. Perhaps try another LaTeX engine (e.g. XeLaTeX).
see /home/user/rizin/book/index.log for more information.
ERROR: Error
    at Object.onComplete (file:///home/user/quarto/quarto-cli/src/project/types/book/book-render.ts:245:15)
    at async renderFiles (file:///home/user/quarto/quarto-cli/src/command/render/render.ts:222:12)
    at async renderProject (file:///home/user/quarto/quarto-cli/src/command/render/project.ts:157:25)
    at async Command.fn (file:///home/user/quarto/quarto-cli/src/command/render/cmd.ts:164:24)
    at async Command.execute (https://deno.land/x/cliffy@v0.19.3/command/command.ts:997:7)
    at async Command.parse (https://deno.land/x/cliffy@v0.19.3/command/command.ts:918:16)
    at async Command.parse (https://deno.land/x/cliffy@v0.19.3/command/command.ts:870:16)
    at async quarto (file:///home/user/quarto/quarto-cli/src/quarto.ts:71:3)
    at async file:///home/user/quarto/quarto-cli/src/quarto.ts:89:5
```
2021-12-16T04:00:25Z
XVilka
closed
Problem handling Unicode characters with LaTeX
https://github.com/quarto-dev/quarto-cli/issues/226