### Bug description

I am attempting to pass a YAML file of execution parameters via the command line option `--execute-params`: 

`test.qmd` file: 
```
---
title: test
date: now
format: pdf
---

Test document.
```

`test.yml` file:
```
date-format: MMM DD, YYYY HH:mm:ss z
```

Command line: 
```
quarto render test.qmd --execute-params test.yml
```

Using this command, I would expect the date to be formatted in the manner specified in the YAML file, but the rendered file uses the default long format. Am I using the command line argument incorrectly, or is there an issue here? 

Running macOS version 12.6, and Quarto version 1.1.179. 

### Checklist

- [X] Please include a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
- [X] Please [format your issue](https://quarto.org/bug-reports.html#formatting-make-githubs-markdown-work-for-us) so it is easier for us to read the bug report.
- [X] Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
- [X] Please document the operating system you're running. If on Linux, please provide the specific distribution.
2022-10-22T03:12:06Z
connorp
bug
closed
Specifying YAML files via the command line
https://github.com/quarto-dev/quarto-cli/issues/2971