Notice this line in the output of the scanner:
It seems the report file was not generated where you expected it. And I can see why: the org.jacoco:jacoco-maven-plugin:prepare-agent goal starts JaCoCo agent to collect coverage data, but the step to actually write that to the report file is missing. Add org.jacoco:jacoco-maven-plugin:report after the install goal. This should produce the file, and the warning about “No coverage report…” should disappear.
Let us know how this goes!
Also, I recommend this guide for importing JaCoCo reports.