Require cache command during tests

To allow 'wp transient' commands

Author: Nikschavan

composer.json

@@ -21,8 +21,9 @@
         "wp-cli/wp-cli": "^2.5.1"
     },
     "require-dev": {
+        "wp-cli/cache-command": "^2.0",
         "wp-cli/entity-command": "^1.3 || ^2",
-        "wp-cli/scaffold-command": "^1.2 || ^2",
+        "wp-cli/scaffold-command": "^2.0",
         "wp-cli/wp-cli-tests": "^3.0.16"
     },
     "config": {