Updating c4core to 0.1.8 with SONAME bump

[Ben Beasley]

On 2022-01-12, or slightly later, I plan to update c4core to version 
0.1.8 [1] in Rawhide, which will bump the SONAME version. There are 
currently no dependent packages; c4core will be a dependency for 
rapidyaml, which is not yet packaged.

[1] https://src.fedoraproject.org/rpms/c4core/pull-request/2