Bump external/asmjit from 1da9e4d to 803712f (#1474)

Bumps [external/asmjit](https://github.com/asmjit/asmjit) from `1da9e4d` to `803712f`.
- [Commits](asmjit/asmjit@1da9e4d...803712f)

---
updated-dependencies:
- dependency-name: external/asmjit
  dependency-type: direct:production
...

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