OAK-9832: Update jacoco plugin to 0.8.8
OAK-9832: Update jacoco plugin to 0.8.8

mreutegg/jackrabbit-oak,apache/jackrabbit-oak,mreutegg/jackrabbit-oak,mreutegg/jackrabbit-oak,apache/jackrabbit-oak,apache/jackrabbit-oak,apache/jackrabbit-oak,mreutegg/jackrabbit-oak,apache/jackrabbit-oak,mreutegg/jackrabbit-oak