Bump riscv-isa-sim from `740e635` to `f45f726`

Bumps [riscv-isa-sim](https://github.com/riscv/riscv-isa-sim) from `740e635` to `f45f726`.
- [Release notes](https://github.com/riscv/riscv-isa-sim/releases)
- [Commits](https://github.com/riscv/riscv-isa-sim/compare/740e6353a166ec3ba936b200482d6fc381b8082b...f45f7269b71e3da218a1e1bb4d08b8954cab2d70

)

---
updated-dependencies:
- dependency-name: riscv-isa-sim
  dependency-type: direct:production
...

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