rich/CMakeLists.txt: compile library against spdlog

assigned to @veprbl

@wdconinc These are failing since last night https://eicweb.phy.anl.gov/EIC/benchmarks/reconstruction_benchmarks/-/jobs/3248877

These issues are likely related to having hard-coded /usr/local. The only other places where I could find hard-coded references in github.com/eic were also drich-related. Will look in half hour.

approved this merge request

merged