Bump towncrier from 19.2.0 to 21.3.0

dependabot[bot] · web-flow · commit 36aed32f0a7c · 2021-04-06T06:05:28.000Z
Bumps [towncrier](https://github.com/hawkowl/towncrier) from 19.2.0 to 21.3.0. - [Release notes](https://github.com/hawkowl/towncrier/releases) - [Changelog](https://github.com/twisted/towncrier/blob/master/NEWS.rst) - [Commits](twisted/towncrier@19.2.0...21.3.0) Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/requirements/towncrier.txt b/requirements/towncrier.txt
@@ -1 +1 @@
-towncrier==19.2.0
+towncrier==21.3.0
