[ref-using-main] Resolve "CMake build broken due to unsupported minimal version"

• Related issues: #1307 (closed)
• Requested reviewers:

Reason why this change is needed

• CMake build fails in CI because our current minimum required CMake version (3.1) is too old

Description of the change

• Increased minimum required version

Affected operating points

N/A

Related to #1307 (closed)