There is a vulnerability in elasticsearch 6.8.13,upgrade recommended

[QiAnXinCodeSafe]

ES-Fastloader/plugin/pom.xml

Lines 17 to 19 in dc00f9b

	<groupId>org.elasticsearch</groupId>
	<artifactId>elasticsearch</artifactId>
	<version>6.6.1</version>

CVE-2020-7018 CVE-2019-7614 CVE-2020-7019 CVE-2020-7020

Recommended upgrade version：6.8.13