refactor(stylinelint): not lint config on every run

Author: mfranzke

.config/.lintstagedrc.json

@@ -1,5 +1,7 @@
 {
 	"*.md": "markdownlint -c .markdown-lint.yml",
-	"*.{css,scss}": "stylelint --fix",
+	".stylelintrc.*": "stylelint --validate --allow-empty-input",
+	"stylelint.config.*": "stylelint --validate --allow-empty-input",
+	"*.{css,scss}": "stylelint --fix --no-validate",
 	"*.{js,ts,tsx}": "xo --fix"
 }