Update buildSrc Jacoco version to 0.8.7

Changes Jacoco version instances in buildSrc/ from 0.7.9 to 0.8.7.

Bug: 201411021
Test: Java11CompileTest, JacocoTest, other Jacoco tests
Change-Id: I6a3ebf421632061eadf00b2ed54ef396cee2ef75
1 file changed