ReleaseNotes: Updated changelog and release notes for 7.4.2 (#31291)

CHANGELOG.md

 
+<!-- 7.4.2 START -->
+
+# 7.4.2 (2021-02-17)
+
+### Features and enhancements
+
+* **Explore**: Do not show non queryable data sources in data source picker. [#31144](https://github.com/grafana/grafana/pull/31144), [@torkelo](https://github.com/torkelo)
+* **Snapshots**: Disallow anonymous user to create snapshots. [#31263](https://github.com/grafana/grafana/pull/31263), [@marefr](https://github.com/marefr)
+
+### Bug fixes
+
+* **CloudWatch**: Ensure empty query row errors are not passed to the panel. [#31172](https://github.com/grafana/grafana/pull/31172), [@sunker](https://github.com/sunker)
+* **DashboardLinks**: Fixes links always cause full page reload. [#31178](https://github.com/grafana/grafana/pull/31178), [@torkelo](https://github.com/torkelo)
+* **DashboardListPanel**: Fixes issue with folder picker always showing All and using old form styles. [#31160](https://github.com/grafana/grafana/pull/31160), [@torkelo](https://github.com/torkelo)
+* **IPv6**: Support host address configured with enclosing square brackets. [#31226](https://github.com/grafana/grafana/pull/31226), [@aknuds1](https://github.com/aknuds1)
+* **Permissions**: Fix team and role permissions on folders/dashboards not displayed for non Grafana Admin users. [#31132](https://github.com/grafana/grafana/pull/31132), [@AgnesToulet](https://github.com/AgnesToulet)
+* **Postgres**: Fix timeGroup macro converts long intervals to invalid numbers when TimescaleDB is enabled. [#31179](https://github.com/grafana/grafana/pull/31179), [@kurokochin](https://github.com/kurokochin)
+* **Prometheus**: Fix enabling of disabled queries when editing in dashboard. [#31055](https://github.com/grafana/grafana/pull/31055), [@ivanahuckova](https://github.com/ivanahuckova)
+* **QueryEditors**: Fixes issue that happens after moving queries then editing would update other queries. [#31193](https://github.com/grafana/grafana/pull/31193), [@torkelo](https://github.com/torkelo)
+* **SqlDataSources**: Fixes the Show Generated SQL button in query editors. [#31236](https://github.com/grafana/grafana/pull/31236), [@torkelo](https://github.com/torkelo)
+* **StatPanels**: Fixes to palette color scheme is not cleared when loading panel. [#31126](https://github.com/grafana/grafana/pull/31126), [@torkelo](https://github.com/torkelo)
+* **Variables**: Adds back default option for data source variable. [#31208](https://github.com/grafana/grafana/pull/31208), [@hugohaggmark](https://github.com/hugohaggmark)
+* **Variables**: Fixes missing empty elements from regex filters. [#31156](https://github.com/grafana/grafana/pull/31156), [@hugohaggmark](https://github.com/hugohaggmark)
+
+<!-- 7.4.2 END -->
+
 <!-- 7.4.1 START -->
 
 # 7.4.1 (2021-02-11)

docs/sources/release-notes/release-notes-7-4-2.md

++++
+title = "Release notes for Grafana 7.4.2"
+[_build]
+list = false
++++
+
+<!-- Auto generated by update changelog github action -->
+
+# Release notes for Grafana 7.4.2
+
+### Features and enhancements
+
+* **Explore**: Do not show non queryable data sources in data source picker. [#31144](https://github.com/grafana/grafana/pull/31144), [@torkelo](https://github.com/torkelo)
+* **Snapshots**: Disallow anonymous user to create snapshots. [#31263](https://github.com/grafana/grafana/pull/31263), [@marefr](https://github.com/marefr)
+
+### Bug fixes
+
+* **CloudWatch**: Ensure empty query row errors are not passed to the panel. [#31172](https://github.com/grafana/grafana/pull/31172), [@sunker](https://github.com/sunker)
+* **DashboardLinks**: Fixes links always cause full page reload. [#31178](https://github.com/grafana/grafana/pull/31178), [@torkelo](https://github.com/torkelo)
+* **DashboardListPanel**: Fixes issue with folder picker always showing All and using old form styles. [#31160](https://github.com/grafana/grafana/pull/31160), [@torkelo](https://github.com/torkelo)
+* **IPv6**: Support host address configured with enclosing square brackets. [#31226](https://github.com/grafana/grafana/pull/31226), [@aknuds1](https://github.com/aknuds1)
+* **Permissions**: Fix team and role permissions on folders/dashboards not displayed for non Grafana Admin users. [#31132](https://github.com/grafana/grafana/pull/31132), [@AgnesToulet](https://github.com/AgnesToulet)
+* **Postgres**: Fix timeGroup macro converts long intervals to invalid numbers when TimescaleDB is enabled. [#31179](https://github.com/grafana/grafana/pull/31179), [@kurokochin](https://github.com/kurokochin)
+* **Prometheus**: Fix enabling of disabled queries when editing in dashboard. [#31055](https://github.com/grafana/grafana/pull/31055), [@ivanahuckova](https://github.com/ivanahuckova)
+* **QueryEditors**: Fixes issue that happens after moving queries then editing would update other queries. [#31193](https://github.com/grafana/grafana/pull/31193), [@torkelo](https://github.com/torkelo)
+* **SqlDataSources**: Fixes the Show Generated SQL button in query editors. [#31236](https://github.com/grafana/grafana/pull/31236), [@torkelo](https://github.com/torkelo)
+* **StatPanels**: Fixes to palette color scheme is not cleared when loading panel. [#31126](https://github.com/grafana/grafana/pull/31126), [@torkelo](https://github.com/torkelo)
+* **Variables**: Adds back default option for data source variable. [#31208](https://github.com/grafana/grafana/pull/31208), [@hugohaggmark](https://github.com/hugohaggmark)
+* **Variables**: Fixes missing empty elements from regex filters. [#31156](https://github.com/grafana/grafana/pull/31156), [@hugohaggmark](https://github.com/hugohaggmark)
+