Increase release patch number

Author: dpiparo

core/foundation/inc/ROOT/RVersion.hxx

@@ -4,7 +4,7 @@
 /* Update on release: */
 #define ROOT_VERSION_MAJOR 6
 #define ROOT_VERSION_MINOR 38
-#define ROOT_VERSION_PATCH 2  // When changing the version number here, never add leading zeroes!
+#define ROOT_VERSION_PATCH 3  // When changing the version number here, never add leading zeroes!
 #define ROOT_RELEASE_DATE "Feb 25 2026"
 
 /* Don't change the lines below. */