Merge pull request #10698 from nextcloud/changelog-master-stable-3.21.2

Add changelog for 3.21.2

CHANGELOG.md

@@ -1,3 +1,9 @@
+## 3.21.2 (September 1, 2022)
+
+- Bug fixes
+
+Minimum: NC 16 Server, Android 6.0 Marshmallow
+
 ## 3.21.1 (August 26, 2022)
 
 - Bug fixes