chore(deps-dev): bump rollup-plugin-postcss from 2.8.2 to 3.1.1

Bumps [rollup-plugin-postcss](https://github.com/egoist/rollup-plugin-postcss) from 2.8.2 to 3.1.1.
- [Release notes](https://github.com/egoist/rollup-plugin-postcss/releases)
- [Changelog](https://github.com/egoist/rollup-plugin-postcss/blob/master/CHANGELOG-OLD.md)
- [Commits](https://github.com/egoist/rollup-plugin-postcss/compare/v2.8.2...v3.1.1)

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

package-lock.json

@@ -9902,9 +9902,9 @@
       "dev": true
     },
     "rollup-plugin-postcss": {
-      "version": "2.8.2",
-      "resolved": "https://registry.npmjs.org/rollup-plugin-postcss/-/rollup-plugin-postcss-2.8.2.tgz",
-      "integrity": "sha512-IZkOIlzWJLmMUS6EDbjUYZEwdhukdcM+39rmXKVl/WQ2rnMpQxF3ByDUzq9zYok6weT7rteuzVkV5nWjnrZrtw==",
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-postcss/-/rollup-plugin-postcss-3.1.1.tgz",
+      "integrity": "sha512-4/FO5/2O5kv2uWRd7PPTN4mBCWoHwwFTnpEGokfPKfj6kygvTORqkBWNgVPXi7bBefNKtMA3FqQ10se6/J8kKw==",
       "dev": true,
       "requires": {
         "chalk": "^4.0.0",
@@ -9971,9 +9971,9 @@
           "dev": true
         },
         "resolve": {
-          "version": "1.16.1",
-          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.16.1.tgz",
-          "integrity": "sha512-rmAglCSqWWMrrBv/XM6sW0NuRFiKViw/W4d9EbC4pt+49H8JwHy+mcGmALTEg504AUDcLTvb1T2q3E9AnmY+ig==",
+          "version": "1.17.0",
+          "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.17.0.tgz",
+          "integrity": "sha512-ic+7JYiV8Vi2yzQGFWOkiZD5Z9z7O2Zhm9XMaTxdJExKasieFCr+yXZ/WmXsckHiKl12ar0y6XiXDx3m4RHn1w==",
           "dev": true,
           "requires": {
             "path-parse": "^1.0.6"

package.json

@@ -40,7 +40,7 @@
     "rollup-plugin-livereload": "^1.1.0",
     "rollup-plugin-node-resolve": "^5.2.0",
     "rollup-plugin-peer-deps-external": "^2.2.2",
-    "rollup-plugin-postcss": "^2.8.2",
+    "rollup-plugin-postcss": "^3.1.1",
     "rollup-plugin-replace": "^2.2.0",
     "rollup-plugin-serve": "^1.0.1",
     "rollup-plugin-terser": "^5.3.0",