Downgrade scoverage plugin due to build failure

[pjfanning]

I just spotted #307 - either this or that work.

https://pipelines.actions.githubusercontent.com/serviceHosts/a9380272-989d-434a-87fd-c3400fd73bc6/_apis/pipelines/1/runs/319/signedlogcontent/4?urlExpires=2022-07-28T14%3A36%3A31.9786687Z&urlSigningMethod=HMACV1&urlSignature=6gPuwgWrdKksNYDd2hD%2B0bduviMptquIHcOz67xAdt0%3D

2022-07-27T03:25:56.2982328Z [error] (util-test / update) found version conflict(s) in library dependencies; some are suspected to be binary incompatible:
2022-07-27T03:25:56.2984094Z [error] 
2022-07-27T03:25:56.2985860Z [error] 	* org.scala-lang.modules:scala-xml_2.13:2.1.0 (early-semver) is selected over 1.2.0
2022-07-27T03:25:56.2987807Z [error] 	    +- org.scoverage:scalac-scoverage-reporter_2.13:2.0.0 (depends on 2.1.0)
2022-07-27T03:25:56.2989942Z [error] 	    +- org.scalatest:scalatest_2.13:3.1.0                 (depends on 1.2.0)
2022-07-27T03:25:56.2992513Z [error] 

[bryce-anderson]

Hi @pjfanning, thanks for the PR, we saw it two and merged 92766ca to fix it.