[DOCS] Release notes for v7.16.0 (#81369)

Author: danhermann

docs/reference/release-notes.asciidoc

@@ -6,6 +6,7 @@
 
 This section summarizes the changes in each release.
 
+* <<release-notes-7.16.0>>
 * <<release-notes-7.15.2>>
 * <<release-notes-7.15.1>>
 * <<release-notes-7.15.0>>
@@ -56,6 +57,7 @@ This section summarizes the changes in each release.
 
 --
 
+include::release-notes/7.16.asciidoc[]
 include::release-notes/7.15.asciidoc[]
 include::release-notes/7.14.asciidoc[]
 include::release-notes/7.13.asciidoc[]