[DOCS] Add 8.1.3 release notes (elastic#1951)

Author: jbaiera

docs/src/reference/asciidoc/appendix/release-notes/8.1.3.adoc

@@ -0,0 +1,8 @@
+[[eshadoop-8.1.3]]
+== Elasticsearch for Apache Hadoop version 8.1.3
+
+[[bugs-8.1.3]]
+=== Bug Fixes
+Spark::
+* Set UserProvider before discovery in Spark SQL integrations
+https://github.com/elastic/elasticsearch-hadoop/pull/1934[#1934]

docs/src/reference/asciidoc/appendix/release.adoc

@@ -9,6 +9,7 @@ This section summarizes the changes in each release.
 [[release-notes-8]]
 ===== 8.x
 
+* <<eshadoop-8.1.3>>
 * <<eshadoop-8.1.2>>
 * <<eshadoop-8.1.1>>
 * <<eshadoop-8.1.0>>
@@ -58,6 +59,7 @@ http://github.com/elastic/elasticsearch-hadoop/issues/XXX[#XXX]
 
 ////////////////////////
 
+include::release-notes/8.1.3.adoc[]
 include::release-notes/8.1.2.adoc[]
 include::release-notes/8.1.1.adoc[]
 include::release-notes/8.1.0.adoc[]