Bump riscv-openocd from `9c3a4b4` to `78231cd`

Bumps [riscv-openocd](https://github.com/riscv/riscv-openocd) from `9c3a4b4` to `78231cd`.
- [Release notes](https://github.com/riscv/riscv-openocd/releases)
- [Commits](https://github.com/riscv/riscv-openocd/compare/9c3a4b458cbe88b4deff81452150e6c163e2e6e5...78231cda38b6e01e87ba69d9878a9a7d56dd0c14

)

---
updated-dependencies:
- dependency-name: riscv-openocd
  dependency-type: direct:production
...

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