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

3 jobs for master in 11 minutes and 21 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Build
passed #245977
docker
build_linux_38

00:07:14

81.0%
passed #245976
intel macos
build_macos_intel_38

00:09:39

81.0%
 
  Deploy
passed #245978
docker
deploy_beta

00:01:42