Commit 40177150b for imagemagick.org

commit 40177150b51edd9ac275733bc5f9e98594e0c2c2
Author: Dirk Lemstra <dirk@lemstra.org>
Date:   Thu Jan 14 08:08:21 2021 +0100

    Allow testing the release.

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 517155572..90fba87d6 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,4 +1,5 @@
 on:
+  workflow_dispatch:
   push:
     branches:
     - master