Adds Fleet/Agent 8.4.3 release notes (#2201)

* Adds Fleet/Agent 8.4.3 release notes

* Add Elastic Agent items to release notes

* Apply suggestions from code review

Co-authored-by: Craig MacKenzie <[email protected]>

* Add Fleet Server bug fix

Co-authored-by: Craig MacKenzie <[email protected]>
(cherry picked from commit 4d69c3a)

Author: 2 people

docs/en/ingest-management/release-notes/release-notes-8.4.asciidoc

@@ -5,14 +5,15 @@
 :beats-issue: https://github.com/elastic/beats/issues/
 :agent-libs-pull: https://github.com/elastic/elastic-agent-libs/pull/
 :agent-pull: https://github.com/elastic/elastic-agent/pull/
-:fleet-server-issue: https://github.com/elastic/beats/issues/fleet-server/
-:fleet-server-pull: https://github.com/elastic/beats/pull/fleet-server/
+:fleet-server-issue: https://github.com/elastic/fleet-server/issues/
+:fleet-server-pull: https://github.com/elastic/fleet-server/pull/
 
 [[release-notes]]
 = Release notes
 
 This section summarizes the changes in each release.
 
+* <<release-notes-8.4.3>>
 * <<release-notes-8.4.2>>
 * <<release-notes-8.4.1>>
 * <<release-notes-8.4.0>>
@@ -22,11 +23,49 @@ Also see:
 * {kibana-ref}/release-notes.html[{kib} release notes]
 * {beats-ref}/release-notes.html[{beats} release notes]
 
+// begin 8.4.3 relnotes
+
+[[release-notes-8.4.3]]
+== {fleet} and {agent} 8.4.3
+
+Review important information about the {fleet} and {agent} 8.4.3 release.
+
+[discrete]
+[[bug-fixes-8.4.3]]
+=== Bug fixes
+
+{fleet}::
+* {fleet-server} no longer silently discards user-specified values for cache and
+server limits when defaults are loaded {fleet-server-issue}1841[#1841]
+{fleet-server-pull}1912[#1912]
+
+{agent}::
+* Use at least warning level for all status logs {agent-pull}1218[#1218]
+* Fix unintended reset of source URI when downloading components {agent-pull}1252[#1252]
+* Create separate status reporter for local only events so that degraded
+{fleet} checkins no longer affect health on successful {fleet} checkins {agent-issue}1157[#1157] {agent-pull}1285[#1285]
+* Add success log message after previous checkin failures {agent-pull}1327[#1327]
+* Fix Unix socket connection errors when using diagnostics command {agent-pull}2201[#2201]
+
+[discrete]
+[[enhancements-8.4.3]]
+=== Enhancements
+
+{fleet}::
+* No enhancements for this release
+
+{agent}::
+* Improve logging during upgrades {agent-pull}1287[#1287]
+
+// end 8.4.3 relnotes
+
 // begin 8.4.2 relnotes
 
 [[release-notes-8.4.2]]
 == {fleet} and {agent} 8.4.2
 
+Review important information about the {fleet} and {agent} 8.4.2 release.
+
 [discrete]
 [[bug-fixes-8.4.2]]
 === Bug fixes
@@ -45,6 +84,8 @@ Also see:
 [[release-notes-8.4.1]]
 == {fleet} and {agent} 8.4.1
 
+Review important information about the {fleet} and {agent} 8.4.1 release.
+
 [discrete]
 [[known-issues-8.4.1]]
 === Known issues