CI: skip Jacoco report task in unit test matrix shards

[Copilot]

PR Description

The unitTests / matrix-tests-template (0, 12) job was failing due to jacocoTestReport task resolution, not test failures. In shard runs, Gradle was finalizing test with Jacoco report generation and hitting Maven Central 403s on jacocoAnt dependencies.

• Workflow change

  • Updated the unitTests matrix invocation in .github/workflows/ci.yml to run tests while excluding Jacoco report generation.

• Resulting behavior

  • Matrix shards remain focused on executing selected unit tests.
  • Removes the Jacoco Ant/report artifact dependency from this CI path.

• Code snippet

  gradle_task: "test -x jacocoTestReport"

Fixed Issue(s)

Documentation

• I thought about documentation and added the doc-change-required label to this PR if updates are required.

Changelog

• I thought about adding a changelog entry, and added one if I deemed necessary.

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