Bump llvm-project from 2015abf to 4b36487

Bumps [llvm-project](https://github.com/Xilinx/llvm-project) from `2015abf` to `4b36487`.
- [Commits](Xilinx/llvm-project@2015abf...4b36487)

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

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