fix(deps): update dependency postcss-scss to v4.0.9 (#178)

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

Author: renovate[bot]

Diff for: package-lock.json

@@ -61,7 +61,7 @@
     "assign-deep": "1.0.1",
     "atom-linter": "10.0.0",
     "atom-package-deps": "8.0.0",
-    "postcss-scss": "4.0.7",
+    "postcss-scss": "4.0.9",
     "resolve": "1.22.6",
     "stylelint": "^13.13.1",
     "stylelint-config-standard": "22.0.0"