Update OPA Gatekeeper app to the latest version

[aakashnagpal4567]

This issue is a:

• Bug Report
• Enhancement suggestion
• Feature request

If the issue concerns an existing Marketplace application, please tag the maintainer of the application (found in manifest.yaml) below:

Enhancement suggestions / feature requests

Currently, we have OPA Gatekeeper version 3.4.0 installed by Civo marketplace as a newer version 3.12.0 is available, so it needs to be updated to the newer version. We kindly request an update to the latest version of OPA Gatekeeper on the Civo marketplace to ensure that we have access to the most recent features and improvements.

@_csor is the maintainer for this app, so I request you to please take a look into this.