[conda] use pip to install the package [skip ci]

3 jobs for master in 12 minutes and 14 seconds
Status Job ID Name Coverage
  Build
passed #246252
docker
build_linux_38

00:06:38

90.0%
passed #246251
intel macos
build_macos_intel_38

00:10:42

90.0%
 
  Deploy
passed #246253
docker
deploy_beta

00:01:32