add release notes for 7.17.16 (#12175)

Author: colleenmcginnis

changelogs/7.17.asciidoc

@@ -3,6 +3,7 @@
 
 https://github.com/elastic/apm-server/compare/7.16\...7.17[View commits]
 
+* <<release-notes-7.17.16>>
 * <<release-notes-7.17.15>>
 * <<release-notes-7.17.14>>
 * <<release-notes-7.17.13>>
@@ -20,6 +21,14 @@ https://github.com/elastic/apm-server/compare/7.16\...7.17[View commits]
 * <<release-notes-7.17.1>>
 * <<release-notes-7.17.0>>
 
+[float]
+[[release-notes-7.17.16]]
+=== APM version 7.17.16
+
+https://github.com/elastic/apm-server/compare/v7.17.15\...v7.17.16[View commits]
+
+No significant changes.
+
 [float]
 [[release-notes-7.17.15]]
 === APM version 7.17.15