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

3 jobs for master in 12 minutes and 21 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #245968
docker
build_linux_38

00:06:45

72.0%
passed #245967
intel macos
build_macos_intel_38

00:10:39

72.0%
 
  Deploy
passed #245969
docker
deploy_beta

00:01:40