add 8.10.4 release notes (#11864)

(cherry picked from commit bc78301)

# Conflicts:
#	changelogs/head.asciidoc

changelogs/8.10.asciidoc

@@ -3,11 +3,21 @@
 
 https://github.com/elastic/apm-server/compare/8.9\...8.10[View commits]
 
+* <<release-notes-8.10.4>>
 * <<release-notes-8.10.3>>
 * <<release-notes-8.10.2>>
 * <<release-notes-8.10.1>>
 * <<release-notes-8.10.0>>
 
+[float]
+[[release-notes-8.10.4]]
+=== APM version 8.10.4
+
+[float]
+==== Bug fixes
+
+- RPM package upgrade no longer overwrites the apm-server.yml config {pull}11808[11808]
+
 [float]
 [[release-notes-8.10.3]]
 === APM version 8.10.3

changelogs/head.asciidoc

@@ -0,0 +1,21 @@
+[[release-notes-head]]
+== APM version HEAD
+
+https://github.com/elastic/apm-server/compare/8.11\...main[View commits]
+
+[float]
+==== Breaking Changes
+
+[float]
+==== Bug fixes
+- Switch built-in ILM rollover policies from max_size to max_primary_shard_size {pull}11729[11729].
+
+[float]
+==== Deprecations
+
+[float]
+==== Intake API Changes
+
+[float]
+==== Added
+- Update container base image to Ubuntu 22.04 {pull}11778[11778]