Increase version for upcoming release

Author: knutwurst

Marlin/src/inc/Version.h

@@ -41,7 +41,7 @@
  * here we define this default string as the date where the latest release
  * version was tagged.
  */
- #define CUSTOM_BUILD_VERSION "1.5.3"
+ #define CUSTOM_BUILD_VERSION "1.5.4"
 
 #ifndef STRING_DISTRIBUTION_DATE
   #define STRING_DISTRIBUTION_DATE "2024-03-22"