php_version.h: remove trailing whitespace

Causes the verification of generated files to fail

Author: DanielEScherzer

main/php_version.h

@@ -2,7 +2,7 @@
 /* edit configure.ac to change version number */
 #define PHP_MAJOR_VERSION 8
 #define PHP_MINOR_VERSION 4
-#define PHP_RELEASE_VERSION 20 
+#define PHP_RELEASE_VERSION 20
 #define PHP_EXTRA_VERSION "-dev"
 #define PHP_VERSION "8.4.20-dev"
 #define PHP_VERSION_ID 80420