[12.0.x Root pom] Bump org.jacoco:jacoco-maven-plugin from 0.8.14 to 0.8.15 in the build-deps group across 1 directory

[12.0.x Root pom] Bump org.jacoco:jacoco-maven-plugin from 0.8.14 to 0.8.15 in the build-deps group across 1 directory #322