* c++20 builds working
* get MolStandardize building with clang19
* get FMCS building with clang-19
* set cxx version to c++20
* remove a few more compiler warnings
* bump min boost version, CI cleanup
* boost 1.81 is not available from conda-forge
* remove unused constants
* bump linux version for CI
* remove another unused variable
* fix (hopefully) cartridge CI builds
* simplify cartridge environment
* try postgresql14 in CI
* start the postgresql service
* change the columns used in the pandastools nbtest
* remove missed merge conflict artifact
* get github4823 test to pass with numpy 2.2
* remove a compiler warning/error with g++13
