Bump postcss-safe-parser from 4.0.2 to 5.0.0

Bumps [postcss-safe-parser](https://github.com/postcss/postcss-safe-parser) from 4.0.2 to 5.0.0.
- [Release notes](https://github.com/postcss/postcss-safe-parser/releases)
- [Changelog](https://github.com/postcss/postcss-safe-parser/blob/master/CHANGELOG.md)
- [Commits](postcss/postcss-safe-parser@4.0.2...5.0.0)

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

Author: dependabot[bot]

package-lock.json

@@ -98,7 +98,7 @@
     "npm-run-all": "^4.1.5",
     "postcss": ">=7.0.32",
     "postcss-parser-tests": "^6.5.0",
-    "postcss-safe-parser": "^4.0.2",
+    "postcss-safe-parser": "^5.0.0",
     "postcss-syntax": ">=0.36.2",
     "prettier": "^2.1.1",
     "remark-cli": "^8.0.1"