Bump llvm-project from c86e97b to ca3473c

Bumps [llvm-project](https://github.com/Xilinx/llvm-project) from `c86e97b` to `ca3473c`.
- [Commits](Xilinx/llvm-project@c86e97b...ca3473c)

---
updated-dependencies:
- dependency-name: llvm-project
  dependency-type: direct:production
...

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