chore(deps): bump com.fasterxml.jackson.core:jackson-databind from 2.16.0 to 2.22.0 in /appengine-java8/firebase-event-proxy

chore(deps): bump com.fasterxml.jackson.core:jackson-databind from 2.16.0 to 2.22.0 in /appengine-java8/firebase-event-proxy #214