ReleaseNotes: Updated changelog and release notes for 7.5.9 (#36057) (#36077)

* ReleaseNotes: Updated changelog and release notes for 7.5.9

* Add link to notes

* Apply suggestions from code review

Co-authored-by: Ursula Kallio <73951760+osg-grafana@users.noreply.github.com>

Co-authored-by: Andrej Ocenas <mr.ocenas@gmail.com>
Co-authored-by: Ursula Kallio <73951760+osg-grafana@users.noreply.github.com>
(cherry picked from commit 49a64f8d44)

Co-authored-by: Grot (@grafanabot) <43478413+grafanabot@users.noreply.github.com>

CHANGELOG.md

@@ -130,6 +130,16 @@ The InfoBox & FeatureInfoBox are now deprecated please use the Alert component i
 
 <!-- 8.0.0-beta1 END -->
 
+<!-- 7.5.9 START -->
+
+# 7.5.9 (2021-06-23)
+
+### Bug fixes
+
+* **Login:** Fix Unauthorized message that is displayed on sign-in or snapshot page. [#35880](https://github.com/grafana/grafana/pull/35880), [@torkelo](https://github.com/torkelo)
+
+<!-- 7.5.9 END -->
+
 <!-- 7.5.8 START -->
 
 # 7.5.8 (2021-06-16)

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 7.5.9]({{< relref "release-notes-7-5-9" >}})
 - [Release notes for 7.5.8]({{< relref "release-notes-7-5-8" >}})
 - [Release notes for 7.5.7]({{< relref "release-notes-7-5-7" >}})
 - [Release notes for 7.5.6]({{< relref "release-notes-7-5-6" >}})

docs/sources/release-notes/release-notes-7-5-9.md

@@ -0,0 +1,13 @@
++++
+title = "Release notes for Grafana 7.5.9"
+[_build]
+list = false
++++
+
+<!-- Auto generated by update changelog github action -->
+
+# Release notes for Grafana 7.5.9
+
+### Bug fixes
+
+* **Login:** Fix Unauthorized message that is displayed on sign-in or snapshot page. [#35880](https://github.com/grafana/grafana/pull/35880), [@torkelo](https://github.com/torkelo)