chore: revert changelog so CI can handle it automatically

Author: andre-stefanov

CHANGELOG.md

@@ -1,12 +1,8 @@
-**V1.13.21 - Updates**
+**V1.13.20 - Updates**
 - CI adjustments
 - Dependency updates
 - Unit testing improvements
 
-**V1.13.20 - Updates**
-- Code improvement to stability, multithreading, memory usage, user input, etc.
-- Fixed a bug that caused Latitude to overwrite Longitude in the EEPROM code.
-
 **V1.13.19 - Updates**
 - Support inverting and mirroring InfoDisplays.