Micro-optimize quoted string sub regexes

Author: rvanvelzen

src/Lexer/Lexer.php

@@ -151,8 +151,8 @@ private function generateRegexp(): string
 
 			self::TOKEN_FLOAT => '(?:-?[0-9]++\\.[0-9]*+(?:e-?[0-9]++)?)|(?:-?[0-9]*+\\.[0-9]++(?:e-?[0-9]++)?)|(?:-?[0-9]++e-?[0-9]++)',
 			self::TOKEN_INTEGER => '-?(?:(?:0b[0-1]++)|(?:0o[0-7]++)|(?:0x[0-9a-f]++)|(?:[0-9]++))',
-			self::TOKEN_SINGLE_QUOTED_STRING => '\'(?:\\\\[^\\r\\n]|[^\'\\r\\n\\\\])*+\'',
-			self::TOKEN_DOUBLE_QUOTED_STRING => '"(?:\\\\[^\\r\\n]|[^"\\r\\n\\\\])*+"',
+			self::TOKEN_SINGLE_QUOTED_STRING => '\'(?:\\\\[^\\r\\n]|[^\'\\r\\n\\\\]++)*+\'',
+			self::TOKEN_DOUBLE_QUOTED_STRING => '"(?:\\\\[^\\r\\n]|[^"\\r\\n\\\\]++)*+"',
 
 			self::TOKEN_WILDCARD => '\\*',