GH Actions: Kernel hardening analysis: Exclude RISC-V configs

[ColorfulRhino]

Description

I was checking this Actions workflow https://github.com/armbian/build/actions/runs/8309150018/job/22740183634 and noticed [!] ERROR: failed to detect microarchitecture

Reason: RISC-V is not yet supported by kernel-hardening-checker. See a13xp0p0v/kernel-hardening-checker#56

In their README:

Supported microarchitectures

X86_64
X86_32
ARM64
ARM

TODO: RISC-V (issue a13xp0p0v/kernel-hardening-checker#56)

How Has This Been Tested?

Ran manual in CLI: file=config/kernel/linux-uefi-risc64-edge.config and then if [[ "${file}" = config/kernel/*.config && ! "${file}" =~ riscv ]]; then echo yes; fi
Don't know how to run the whole workflow manually quickly, and on a specific file.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas