Update Helm release opa-kube-mgmt to v8.5.12 (#14)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [opa-kube-mgmt](https://www.openpolicyagent.org) | patch | `8.5.8` -> `8.5.12` |

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### Configuration

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Co-authored-by: Renovate Bot <[email protected]>
Reviewed-on: https://gitea.v2.zarek.cc/twinlabs/argocd/pulls/14

Author: chris-sanders

opa/Chart.yaml

@@ -6,7 +6,7 @@ type: application
 dependencies:
   - name: opa-kube-mgmt
     alias: opa
-    version: '8.5.8'
+    version: '8.5.12'
     repository: https://open-policy-agent.github.io/kube-mgmt/charts
   - name: templates
     version: '*'