Add changelog for 6.5.3

CHANGELOG.md

@@ -8,6 +8,20 @@
 * **PagerDuty**: Change `payload.custom_details` field in PagerDuty notification to be a JSON object instead of a string.
 * **Security**: The `[security]` setting `cookie_samesite` configured to `none` now renders cookies with `SameSite=None` attribute compared to before where no `SameSite` attribute was added to cookies. To get the old behavior, use value `disabled` instead of `none`. Refer to [Upgrade Grafana](https://grafana.com/docs/grafana/latest/installation/upgrading/#upgrading-to-v6-6) for more information.
 
+# 6.5.3 (2020-01-15)
+### Features / Enhancements
+* **API**: Validate redirect_to cookie has valid (Grafana) url . [#21057](https://github.com/grafana/grafana/pull/21057), [@papagian](https://github.com/papagian)
+
+### Bug Fixes
+* **AdHocFilter**: Shows SubMenu when filtering directly from table. [#21017](https://github.com/grafana/grafana/pull/21017), [@hugohaggmark](https://github.com/hugohaggmark)
+* **Cloudwatch**: Fixed crash when switching from cloudwatch data source. [#21376](https://github.com/grafana/grafana/pull/21376), [@torkelo](https://github.com/torkelo)
+* **DataLinks**: Sanitize data/panel link URLs. [#21140](https://github.com/grafana/grafana/pull/21140), [@dprokop](https://github.com/dprokop)
+* **Elastic**: Fix multiselect variable interpolation for logs. [#20894](https://github.com/grafana/grafana/pull/20894), [@ivanahuckova](https://github.com/ivanahuckova)
+* **Prometheus**: Fixes so user can change HTTP Method in config settings. [#21055](https://github.com/grafana/grafana/pull/21055), [@hugohaggmark](https://github.com/hugohaggmark)
+* **Prometheus**: Prevents validation of inputs when clicking in them without changing the value. [#21059](https://github.com/grafana/grafana/pull/21059), [@hugohaggmark](https://github.com/hugohaggmark)
+* **Rendering**: Fix panel PNG rendering when using sub url & serve_from_sub_path = true. [#21306](https://github.com/grafana/grafana/pull/21306), [@bgranvea](https://github.com/bgranvea)
+* **Table**: Matches column names with unescaped regex characters. [#21164](https://github.com/grafana/grafana/pull/21164), [@hugohaggmark](https://github.com/hugohaggmark)
+
 # 6.5.2 (2019-12-11)
 
 ### Bug Fixes