Update xRooFitVersion.h

I realised the versions given had not been updated with the last push I made to master. This fixes that

(cherry picked from commit 78d7bcc)

Author: will-cern

roofit/xroofit/src/xRooFitVersion.h

@@ -1,9 +1,9 @@
 /*
 * Project: xRooFit
 * Author:
-*   Will Buttinger, RAL 2024
+*   Will Buttinger, RAL 2025
 *
-* Copyright (c) 2024, CERN
+* Copyright (c) 2025, CERN
 *
 * Redistribution and use in source and binary forms,
 * with or without modification, are permitted according to the terms
@@ -12,5 +12,5 @@
 
 #pragma once
 
-#define GIT_COMMIT_HASH "c9465df"
-#define GIT_COMMIT_DATE "2024-11-28 11:49:25 +0000"
+#define GIT_COMMIT_HASH "409fbd5c"
+#define GIT_COMMIT_DATE "2025-10-03 9:53:09 +0000"