chore(deps): update dependency postcss to v8.5.19 (#164)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -39,7 +39,7 @@
     "jsdoc": "4.0.5",
     "node-fetch": "3.3.2",
     "npm-run-all2": "9.0.2",
-    "postcss": "8.5.18",
+    "postcss": "8.5.19",
     "webpack": "5.108.4",
     "webpack-cli": "7.2.1",
     "webpack-dev-server": "5.2.6"