fix(deps): update dependency css-minimizer-webpack-plugin to v8

Author: renovate[bot]

package-lock.json

@@ -15,7 +15,7 @@
     "@openedx/paragon": "^23.3.1",
     "bi-app-sass": "1.1.0",
     "css-loader": "7.1.4",
-    "css-minimizer-webpack-plugin": "7.0.4",
+    "css-minimizer-webpack-plugin": "8.0.0",
     "file-loader": "6.2.0",
     "mini-css-extract-plugin": "2.10.1",
     "sass": "1.98.0",