Fixed package names verification to support multi-digit versions.
Currently "Validate RPM package names" release step is failing because of version "7.0.10" in these examples:
WARNING: powershell-7.0.10-1.centos.8.x86_64.rpm is not a valid package name
WARNING: powershell-7.0.10-1.rhel.7.x86_64.rpm is not a valid package name
WARNING: powershell-lts-7.0.10-1.centos.8.x86_64.rpm is not a valid package name
WARNING: powershell-lts-7.0.10-1.rhel.7.x86_64.rpm is not a valid package name