chore(deps): update terraform oci to v6.12.0 (#15)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [oci](https://registry.terraform.io/providers/oracle/oci)
([source](https://redirect.github.com/oracle/terraform-provider-oci)) |
required_provider | minor | `6.11.0` -> `6.12.0` |

---

### Release Notes

<details>
<summary>oracle/terraform-provider-oci (oci)</summary>

###
[`v6.12.0`](https://redirect.github.com/oracle/terraform-provider-oci/blob/HEAD/CHANGELOG.md#6120-October-02-2024)

[Compare
Source](https://redirect.github.com/oracle/terraform-provider-oci/compare/v6.11.0...v6.12.0)

##### Added

-   Support for OIC Gen3 Disaster Recovery
-   Support for ZPR v1 - Oracle Cloud World Scope - OC1 ONLY
-   Support for Security Attributes
-   Support for change hostname label to be updatable
-   Support for Zero Trust Packet Routing

##### Bug Fix

- add support for tunnel configurations in create private ipsec over
fastconnect
-   add publish_artifact branch in ocibuild.conf file

</details>

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terraform/oci/versions.tf

@@ -6,7 +6,7 @@ terraform {
   required_providers {
     oci = {
       source  = "oracle/oci"
-      version = "6.11.0"
+      version = "6.12.0"
     }
   }
 }