Bump rvdecoderdbtest/jvm/riscv-opcodes from feff9dc to 6a1be96

Bumps [rvdecoderdbtest/jvm/riscv-opcodes](https://github.com/riscv/riscv-opcodes) from `feff9dc` to `6a1be96`.
- [Commits](riscv/riscv-opcodes@feff9dc...6a1be96)

---
updated-dependencies:
- dependency-name: rvdecoderdbtest/jvm/riscv-opcodes
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>