fix(deps): update dependency postcss-safe-parser to v7 (#305)

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

Author: renovate[bot]

package-lock.json

@@ -96,7 +96,7 @@
     "eslint-utils": "^3.0.0",
     "lodash": "^4.17.21",
     "postcss": "^8.4.31",
-    "postcss-safe-parser": "^6.0.0",
+    "postcss-safe-parser": "^7.0.0",
     "postcss-scss": "^4.0.3",
     "postcss-selector-parser": "^6.0.9",
     "postcss-styl": "^0.12.0"