Update dependency rollup-plugin-postcss to v3.1.3

Author: renovate-bot

package.json

@@ -105,7 +105,7 @@
     "rollup-plugin-json": "4.0.0",
     "rollup-plugin-livereload": "1.3.0",
     "rollup-plugin-node-resolve": "5.2.0",
-    "rollup-plugin-postcss": "3.1.2",
+    "rollup-plugin-postcss": "3.1.3",
     "rollup-plugin-progress": "1.1.2",
     "rollup-plugin-replace": "2.2.0",
     "rollup-plugin-terser": "6.1.0",

yarn.lock

@@ -13752,10 +13752,10 @@ rollup-plugin-node-resolve@5.2.0:
     resolve "^1.11.1"
     rollup-pluginutils "^2.8.1"
 
-rollup-plugin-postcss@3.1.2:
-  version "3.1.2"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-postcss/-/rollup-plugin-postcss-3.1.2.tgz#e862033b96fabb73390fd4ccbee0155385d30e46"
-  integrity sha512-29ocL0CqjLj9sUghTG64ZwFxwbo2d0WyOTVtqPg6SEMZyFmKke9TClBf4/CcdFaWHqS+YZGsUpq3mzIBSYrw+A==
+rollup-plugin-postcss@3.1.3:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-postcss/-/rollup-plugin-postcss-3.1.3.tgz#b11f69a907cc497311f44da12030439545a7bd80"
+  integrity sha512-5Zm70/HkuYaQuhFbiGSO3U0bVj0magAPo09sd4sRE7I434Iwe4p7xF43pYfW0BcDvY0ZxzD3Fh2vRJzsm4OEiQ==
   dependencies:
     chalk "^4.0.0"
     concat-with-sourcemaps "^1.1.0"