src: revert IS_RELEASE to 0

PR-URL: nodejs#49084
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: LiviaMedeiros <livia@cirno.name>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

Author: RafaelGSS

src/node_version.h

@@ -29,7 +29,7 @@
 #define NODE_VERSION_IS_LTS 0
 #define NODE_VERSION_LTS_CODENAME ""
 
-#define NODE_VERSION_IS_RELEASE 1
+#define NODE_VERSION_IS_RELEASE 0
 
 #ifndef NODE_STRINGIFY
 #define NODE_STRINGIFY(n) NODE_STRINGIFY_HELPER(n)