📦 upgrade sass-loader

Signed-off-by: Andreas Müller <mail@devmount.de>

Author: devmount

package.json

@@ -55,7 +55,7 @@
 		"@vue/cli-service": "^5.0.0-rc.2",
 		"node-sass": "^7.0.1",
 		"raw-loader": "^4.0.2",
-		"sass-loader": "^12.0.4",
+		"sass-loader": "^13.0.0",
 		"vue-template-compiler": "^2.6.10"
 	},
 	"postcss": {