ReleaseNotes: Updated changelog and release notes for 8.4.1 (#45604) (#45606)

* ReleaseNotes: Updated changelog and release notes for 8.4.1

* Add alerting bugfix

Co-authored-by: Andrej Ocenas <mr.ocenas@gmail.com>
(cherry picked from commit 380e07ba29)

docs/sources/release-notes/_index.md

@@ -8,6 +8,7 @@ weight = 10000
 Here you can find detailed release notes that list everything that is included in every release as well as notices
 about deprecations, breaking changes as well as changes that relate to plugin development.
 
+- [Release notes for 8.4.1]({{< relref "release-notes-8-4-1" >}})
 - [Release notes for 8.4.0-beta1]({{< relref "release-notes-8-4-0-beta1" >}})
 - [Release notes for 8.3.5]({{< relref "release-notes-8-3-5" >}})
 - [Release notes for 8.3.4]({{< relref "release-notes-8-3-4" >}})

docs/sources/release-notes/release-notes-8-4-1.md

@@ -0,0 +1,18 @@
++++
+title = "Release notes for Grafana 8.4.1"
+hide_menu = true
++++
+
+<!-- Auto generated by update changelog github action -->
+
+# Release notes for Grafana 8.4.1
+
+### Features and enhancements
+
+- **Cloudwatch:** Add support for AWS/PrivateLink\* metrics and dimensions. [#45515](https://github.com/grafana/grafana/pull/45515), [@szymonpk](https://github.com/szymonpk)
+- **Configuration:** Add ability to customize okta login button name and icon. [#44079](https://github.com/grafana/grafana/pull/44079), [@DanCech](https://github.com/DanCech)
+- **Tempo:** Switch out Select with AsyncSelect component to get loading state in Tempo Search. [#45110](https://github.com/grafana/grafana/pull/45110), [@CatPerry](https://github.com/CatPerry)
+
+### Bug fixes
+
+- **Alerting:** Fix migrations by making send_alerts_to field nullable. [#45572](https://github.com/grafana/grafana/pull/45572), [@santihernandezc](https://github.com/santihernandezc)