fix(nginx-cache): add wp-cli dev dependency

Author: brianvarskonst

composer.json

@@ -20,7 +20,8 @@
     },
     "require-dev": {
         "symfony/var-dumper": "^8.1",
-        "sympress/qa": "dev-main"
+        "sympress/qa": "dev-main",
+        "wp-cli/wp-cli-bundle": "^2.12.0"
     },
     "autoload": {
         "psr-4": {