Merge pull request #568 from SwiftFiddle/renovate/css-loader-7.x

Update dependency css-loader to v7

Author: kishikawakatsumi

package-lock.json

@@ -19,7 +19,7 @@
   "devDependencies": {
     "autoprefixer": "10.4.19",
     "copy-webpack-plugin": "12.0.2",
-    "css-loader": "6.11.0",
+    "css-loader": "7.0.0",
     "html-webpack-plugin": "5.6.0",
     "mini-css-extract-plugin": "2.8.1",
     "postcss": "8.4.38",