Updated the release notes (#2163)

Author: ezimuel

docs/guide/release-notes.asciidoc

@@ -1,6 +1,7 @@
 [[release-notes]]
 == Release notes
 
+* <<rn-8-6-2>>
 * <<rn-8-6-1>>
 * <<rn-8-6-0>>
 * <<rn-8-5-3>>
@@ -24,6 +25,12 @@
 * <<rn-8-1-0>>
 * <<rn-8-0-0>>
 
+[discrete]
+[[rn-8-6-2]]
+=== 8.6.2 (2022-02-16)
+
+* Client is compatible with Elasticsearch 8.6.2
+
 [discrete]
 [[rn-8-6-1]]
 === 8.6.1 (2022-01-27)