Bump externals/llvm-project from 09ddec3 to 9d48ee6

Bumps [externals/llvm-project](https://github.com/Xilinx/llvm-project) from `09ddec3` to `9d48ee6`.
- [Commits](Xilinx/llvm-project@09ddec3...9d48ee6)

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

Signed-off-by: dependabot[bot] <support@github.com>