src: update NODE_MODULE_VERSION to 72

Major V8 updates are usually API/ABI incompatible with previous
versions. This commit adapts NODE_MODULE_VERSION for V8 7.4.

Refs: https://github.com/nodejs/CTC/blob/master/meetings/2016-09-28.md

PR-URL: #26685
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>

src/node_version.h

@@ -113,10 +113,11 @@
  * V8 7.0: 67
  * V8 7.1: 68
  * V8 7.3: 71
+ * V8 7.4: 72
  *
  * More information can be found at https://nodejs.org/en/download/releases/
  */
-#define NODE_MODULE_VERSION 71
+#define NODE_MODULE_VERSION 72
 
 // the NAPI_VERSION provided by this version of the runtime
 #define NAPI_VERSION  4