Upgrade test and build dependencies

These upgrades are available:

org.apache.maven:maven-resolver-provider: 3.5.0 -> 3.5.4
org.apache.maven.resolver:maven-resolver-api: 1.1.0 -> 1.1.1
org.codehaus.plexus:plexus-utils: 3.1.0 -> 3.1.1

These dependencies are not used in production code.