[conda] Change sphinx-build and pytest run order to accomodate coverage dumps

4 jobs for pytest in 2 minutes and 13 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #218013
docker
build_linux_36

00:01:53

25.0%
passed #218014
docker
build_linux_37

00:01:49

25.0%
passed #218011
macosx
build_macosx_36

00:02:13

25.0%
passed #218012
macosx
build_macosx_37

00:02:08

25.0%