Replace com.github.cerveada:scalatest-maven-plugin fork with mainstream org.scalatest:scalatest-maven-plugin #21

Background

root-pom pins com.github.cerveada:scalatest-maven-plugin:2.0.1 in two places:

• <pluginManagement> — the version every consumer inherits
• the code-coverage profile — where the JaCoCo agent argLine is wired into it

com.github.cerveada:scalatest-maven-plugin is a JitPack fork of an old
org.scalatest:scalatest-maven-plugin. It differs from mainstream by a single commit,
cerveada/scalatest-maven-plugin@e16f1c5,
which fixed JVM path references for forked test runs.

History:

• Introduced in Commons for A wrong java version is used for running unit-tests commons#52 — "a wrong Java version is used for running unit-tests" (Jan 2021).
• Lifted into root-pom in 1a1a43a4.
• Commons has already moved back to mainstream org.scalatest:scalatest-maven-plugin:2.2.0
  (111-add-code-coverage-support commons#112, Nov 2022) and has run on it since — mainstream is proven to work for at
  least one consumer.

From AbsaOSS/commons#147:

"It was done quite a while ago and I'm not sure if it's still needed. It is worth checking if
things are working fine with a mainstream branch of the scalatest." — @wajda

Why now

The JMF adoption work (#2, AbsaOSS/commons#144) rewires the JaCoCo agent argLine in the
code-coverage profile. That wiring should target one mainstream ScalaTest plugin, not a fork.
Doing this first keeps the JMF root-pom change clean and avoids carrying the fork into the new
root-pom major release.

Goal

Remove the cerveada fork from root-pom; standardize on mainstream org.scalatest:scalatest-maven-plugin.

Scope

• <pluginManagement>: replace com.github.cerveada:scalatest-maven-plugin:2.0.1 with
  org.scalatest:scalatest-maven-plugin:<latest release>.
• code-coverage profile: move the <argLine> wiring from the com.github.cerveada plugin
  block to the org.scalatest one.
• Remove the JitPack <repository> / <pluginRepository> entry if it exists solely for this fork.
• Regression check: reproduce the original A wrong java version is used for running unit-tests commons#52 scenario (forked test JVM,
  non-default / multiple JDKs) and confirm the "wrong Java version" bug does not return.
• Build + test with mvn clean verify and mvn clean verify -Pcode-coverage against at least
  two root-pom consumers (Commons + one other Maven project).
• Grep the AbsaOSS org for direct references to com.github.cerveada; list affected repos.
• Release note: no action for consumers unless they explicitly referenced the cerveada groupId.

Risks & mitigations