Update grammars (#305181)

extensions/sql/syntaxes/sql.tmLanguage.json

@@ -4,7 +4,7 @@
 		"If you want to provide a fix or improvement, please create a pull request against the original repository.",
 		"Once accepted there, we are happy to receive an update request."
 	],
-	"version": "https://github.com/microsoft/vscode-mssql/commit/5fd71951c51e0a8385fb546ccebf0716a549fedf",
+	"version": "https://github.com/microsoft/vscode-mssql/commit/c002f514dd81fa71fa304d4c36f8d2767dbf2f9d",
 	"name": "SQL",
 	"scopeName": "source.sql",
 	"patterns": [
@@ -528,7 +528,7 @@
 						}
 					},
 					"comment": "this is faster than the next begin/end rule since sub-pattern will match till end-of-line and SQL files tend to have very long lines.",
-					"match": "(N)?(')[^']*(')",
+					"match": "(?:(?<![a-zA-Z0-9_])(N))?(')[^']*(')",
 					"name": "string.quoted.single.sql"
 				},
 				{