docs: add 8.2.3 release notes (#8313)

* docs: add 8.2.3 release notes

* Add fix #8292 to the release notes

* Update changelogs/8.2.asciidoc

Co-authored-by: DeDe Morton <dede.morton@elastic.co>
(cherry picked from commit 6b4727a)

changelogs/8.2.asciidoc

@@ -3,10 +3,21 @@
 
 https://github.com/elastic/apm-server/compare/8.1\...8.2[View commits]
 
+* <<release-notes-8.2.3>>
 * <<release-notes-8.2.2>>
 * <<release-notes-8.2.1>>
 * <<release-notes-8.2.0>>
 
+[float]
+[[release-notes-8.2.3]]
+=== APM version 8.2.3
+
+https://github.com/elastic/apm-server/compare/8.2.2\...8.2.3[View commits]
+
+[float]
+==== Bug fixes
+- Added `tags` field mapping to `internal_metrics` data stream {pull} 8292[8292]
+
 [float]
 [[release-notes-8.2.2]]
 === APM version 8.2.2