Bump ext/Tracy from 5d542dc to a9e8f9a

Bumps [ext/Tracy](https://github.com/wolfpld/tracy) from `5d542dc` to `a9e8f9a`.
- [Release notes](https://github.com/wolfpld/tracy/releases)
- [Commits](wolfpld/tracy@5d542dc...a9e8f9a)

---
updated-dependencies:
- dependency-name: ext/Tracy
  dependency-type: direct:production
...

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