Merge pull request #971: Release v12

Author: victorlin

docs/src/reference/change_log.md

@@ -5,6 +5,10 @@ We also use this change log to document new features that maintain backward comp
 
 ## New features since last version update
 
+## v12 (12 July 2022)
+
+- 1 July 2022: Update workflow to support Nextclade v2 (PRs [963](https://github.com/nextstrain/ncov/pull/963), [969](https://github.com/nextstrain/ncov/pull/969)). See [the Nextclade changelog](https://github.com/nextstrain/nextclade/blob/bdfd9cff73f8181bb5891a9a9c49eb0218e7e868/CHANGELOG.md#nextclade-200) for more information.
+
 - 1 June 2022: Add "2m" timespan in Nextstrain profile builds. [PR 957](https://github.com/nextstrain/ncov/pull/957)
 
 - 29 April 2022: Include multiple timespans in Nextstrain profile builds. [PR 910](https://github.com/nextstrain/ncov/pull/910)