build: reset embedder string to "-node.0"

PR-URL: nodejs#23423
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Myles Borins <myles.borins@gmail.com>

common.gypi

@@ -31,7 +31,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.13',
+    'v8_embedder_string': '-node.0',
 
     # Enable disassembler for `--print-code` v8 options
     'v8_enable_disassembler': 1,