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

3 jobs for master in 11 minutes and 16 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #245997
docker
build_linux_38

00:06:24

90.0%
passed #245996
intel macos
build_macos_intel_38

00:09:38

90.0%
 
  Deploy
passed #245998
docker
deploy_beta

00:01:38