Bump css-loader from 6.6.0 to 6.7.1

Bumps [css-loader](https://github.com/webpack-contrib/css-loader) from 6.6.0 to 6.7.1.
- [Release notes](https://github.com/webpack-contrib/css-loader/releases)
- [Changelog](https://github.com/webpack-contrib/css-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/css-loader/compare/v6.6.0...v6.7.1)

---
updated-dependencies:
- dependency-name: css-loader
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

packages/playground/package.json

@@ -18,7 +18,7 @@
     "antd": "^4.18.5",
     "babel-plugin-transform-es2015-modules-commonjs": "^6.26.2",
     "binary-search-tree": "0.2.6",
-    "css-loader": "^6.6.0",
+    "css-loader": "^6.7.1",
     "gh-pages": "2.2.0",
     "jstat": "1.9.2",
     "lenses-ppx": "5.1.0",

yarn.lock

@@ -7407,13 +7407,13 @@ css-loader@^5.0.1:
     schema-utils "^3.0.0"
     semver "^7.3.5"
 
-css-loader@^6.5.1, css-loader@^6.6.0:
-  version "6.6.0"
-  resolved "https://registry.yarnpkg.com/css-loader/-/css-loader-6.6.0.tgz#c792ad5510bd1712618b49381bd0310574fafbd3"
-  integrity sha512-FK7H2lisOixPT406s5gZM1S3l8GrfhEBT3ZiL2UX1Ng1XWs0y2GPllz/OTyvbaHe12VgQrIXIzuEGVlbUhodqg==
+css-loader@^6.5.1, css-loader@^6.7.1:
+  version "6.7.1"
+  resolved "https://registry.yarnpkg.com/css-loader/-/css-loader-6.7.1.tgz#e98106f154f6e1baf3fc3bc455cb9981c1d5fd2e"
+  integrity sha512-yB5CNFa14MbPJcomwNh3wLThtkZgcNyI2bNMRt8iE5Z8Vwl7f8vQXFAzn2HDOJvtDq2NTZBUGMSUNNyrv3/+cw==
   dependencies:
     icss-utils "^5.1.0"
-    postcss "^8.4.5"
+    postcss "^8.4.7"
     postcss-modules-extract-imports "^3.0.0"
     postcss-modules-local-by-default "^4.0.0"
     postcss-modules-scope "^3.0.0"