Update xml-rs v0.8.13 -> v0.8.14 (#2425)

### What
Fix https://github.com/rerun-io/rerun/security/dependabot/16

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)

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PR Build Summary: https://build.rerun.io/pr/2425

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Docs preview: https://rerun.io/preview/3f0fc45/docs
Examples preview: https://rerun.io/preview/3f0fc45/examples
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