Update the vendor libraries

Author: leofeyer

composer.json

@@ -14,10 +14,10 @@
 		"contao/idna": "dev-master",
 		"contao/php-diff": "dev-master",
 		"contao/tcpdf": "dev-master",
-		"simplepie/simplepie": "1.3.*",
-		"swiftmailer/swiftmailer": "4.3.*",
-		"michelf/php-markdown": "1.4.*",
-		"leafo/scssphp": "0.0.*",
-		"leafo/lessphp": "0.4.*"
+		"simplepie/simplepie": "~1.3.0",
+		"swiftmailer/swiftmailer": "~4.3.0",
+		"michelf/php-markdown": "~1.4.0",
+		"leafo/scssphp": "~0.0.9",
+		"leafo/lessphp": "~0.4.0"
 	}
 }