private static void showMessage(String latestVersion) {
		Util.infoMsg("There is a new version of jbang available!");
		Util.infoMsg("You have version " + Util.getJBangVersion()
				+ " and " + latestVersion + " is the latest.");
		if (Util.runningManagedJBang()) {
			Util.infoMsg("Run 'jbang version --update' to update to the latest version.");
		} else {
			showManualInstallMessage();
		}
	}
Inform the user if the future returned a newer JBang version number, or
cancel the Future if it isn't done yet.
src/main/java/dev/jbang/util/VersionChecker.java