Add missing "test" scope to "org.scalatest" %%% "scalatest" dependency.
Add missing "test" scope to "org.scalatest" %%% "scalatest" dependency.

Should be done in https://github.com/scoverage/scalac-scoverage-plugin/commit/1db46095629ffaf2821807ddf1929dd7b90036c9.

scoverage/scalac-scoverage-plugin,scoverage/scalac-scoverage-plugin,gslowikowski/scalac-scoverage-plugin