Add changelog of v2.1.0-rc.3

Author: CodeDoctorDE

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 <!--ENTER CHANGELOG HERE-->
 
+## 2.1.0-rc.3 (2024-05-07)
+
+* Add button to check for updates instead of automatically checking on opening the settings ([#691](https://github.com/LinwoodDev/Butterfly/issues/691))
+* Update android build files
+
+Read more here: https://linwood.dev/butterfly/2.1.0-rc.3
+
 ## 2.1.0-rc.2 (2024-05-06)
 
 * Reenable changing data directory on android ([#569](https://github.com/LinwoodDev/Butterfly/issues/569))