CI: add output of model name from /proc/cpuinfo

[slabasan]

Description

Running into job failures when loading msr-safe because CPU is unsupported. This provides more details as to which CPUs we are getting with GitHub Actions.

One idea is to expect a failure for the verify job if we are on a CPU that is unsupported instead of failing, but this will require some changes to the order in which we check system information.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature/architecture support (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Build/CI update

Checklist:

• I have run ./scripts/check-code-format.sh and confirm my code code follows the style guidelines of variorum
• I have added comments in my code
• My changes generate no new warnings (build with -DENABLE_WARNINGS=ON)
• New and existing unit tests pass with my changes