Add release notes for 8.11.3 release (#103216)

docs/reference/release-notes.asciidoc

@@ -8,6 +8,7 @@ This section summarizes the changes in each release.
 
 * <<release-notes-8.13.0>>
 * <<release-notes-8.12.0>>
+* <<release-notes-8.11.3>>
 * <<release-notes-8.11.2>>
 * <<release-notes-8.11.1>>
 * <<release-notes-8.11.0>>
@@ -59,6 +60,7 @@ This section summarizes the changes in each release.
 
 include::release-notes/8.13.0.asciidoc[]
 include::release-notes/8.12.0.asciidoc[]
+include::release-notes/8.11.3.asciidoc[]
 include::release-notes/8.11.2.asciidoc[]
 include::release-notes/8.11.1.asciidoc[]
 include::release-notes/8.11.0.asciidoc[]

docs/reference/release-notes/8.11.3.asciidoc

@@ -1,6 +1,8 @@
 [[release-notes-8.11.3]]
 == {es} version 8.11.3
 
+coming[8.11.3]
+
 Also see <<breaking-changes-8.11,Breaking changes in 8.11>>.
 
 [[bug-8.11.3]]