ReleaseNotes: Updated changelog and release notes for 7.3.7 (#30280)

* ReleaseNotes: Updated changelog and release notes for 7.3.7

* Changelog: set everything as bug fixes

Co-authored-by: Agnès Toulet <agnes.toulet@gmail.com>

CHANGELOG.md

@@ -50,6 +50,19 @@ In order not to break all angular panel plugins and data sources we have some cu
 
 <!-- 7.4.0 END -->
 
+<!-- 7.3.7 START -->
+
+# 7.3.7 (2021-01-14)
+
+### Bug fixes
+
+* **Auth**: Add missing request headers to SigV4 middleware allowlist. [#30115](https://github.com/grafana/grafana/pull/30115), [@wbrowne](https://github.com/wbrowne)
+* **Elasticsearch**: Sort results by index order as well as @timestamp. [#29761](https://github.com/grafana/grafana/pull/29761), [@STEELBADGE](https://github.com/STEELBADGE)
+* **SAML**: Fixes bug in processing SAML response with empty <Issuer> element by updating saml library (Enterprise). [#30179](https://github.com/grafana/grafana/pull/30179), [@alexanderzobnin](https://github.com/alexanderzobnin)
+* **SeriesToRows**: Fixes issue in transform so that value field is always named Value. [#30054](https://github.com/grafana/grafana/pull/30054), [@torkelo](https://github.com/torkelo)
+
+<!-- 7.3.7 END -->
+
 <!-- 7.3.6 START -->
 
 # 7.3.6 (2020-12-17)

docs/sources/release-notes/release-notes-7-3-7.md

++++
+title = "Release notes for Grafana 7.3.7"
+[_build]
+list = false
++++
+
+<!-- Auto generated by update changelog github action -->
+
+# Release notes for Grafana 7.3.7
+
+### Bug fixes
+
+* **Auth**: Add missing request headers to SigV4 middleware allowlist. [#30115](https://github.com/grafana/grafana/pull/30115), [@wbrowne](https://github.com/wbrowne)
+* **Elasticsearch**: Sort results by index order as well as @timestamp. [#29761](https://github.com/grafana/grafana/pull/29761), [@STEELBADGE](https://github.com/STEELBADGE)
+* **SAML**: Fixes bug in processing SAML response with empty <Issuer> element by updating saml library (Enterprise). [#30179](https://github.com/grafana/grafana/pull/30179), [@alexanderzobnin](https://github.com/alexanderzobnin)
+* **SeriesToRows**: Fixes issue in transform so that value field is always named Value. [#30054](https://github.com/grafana/grafana/pull/30054), [@torkelo](https://github.com/torkelo)
+