[Dependabot]: Bump riscv-arch-test from a5a20fe to b7634dc

Bumps [riscv-arch-test](https://github.com/riscv-non-isa/riscv-arch-test) from `a5a20fe` to `b7634dc`.
- [Release notes](https://github.com/riscv-non-isa/riscv-arch-test/releases)
- [Commits](riscv-non-isa/riscv-arch-test@a5a20fe...b7634dc)

---
updated-dependencies:
- dependency-name: riscv-arch-test
  dependency-type: direct:production
...

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