Update dependency squizlabs/php_codesniffer to v3.8.0

Author: renovate[bot]

app/wp-content/themes/md-starter/composer.json

@@ -4,7 +4,7 @@
         "timber/timber": "^1.15.1"
     },
     "require-dev": {
-        "squizlabs/php_codesniffer": "3.7.2",
+        "squizlabs/php_codesniffer": "3.8.0",
         "wp-coding-standards/wpcs": "2.3.0"
     },
     "scripts": {