GHSA-j9rx-rppg-6hh4: Anyquery has Path Traversal through `clear_plugin_cache`, Allowing Arbitrary Directory Deletion

Anyquery versions up to 0.4.4 contain a path traversal vulnerability in the `clear_plugin_cache` function, which accepts user input and passes it directly to file deletion commands without proper validation. An attacker with API access can use sequences like `../../../../tmp/target` to escape the intended cache directory and delete arbitrary directories on the server.