chore: Patch docs for 3.18.1 release (#3750)

Signed-off-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: JaydipGabani <[email protected]>

website/docs/opa-versions.md

@@ -7,6 +7,7 @@ Gatekeeper depends on [Open Policy Agent](https://www.openpolicyagent.org/). To
 
 | Gatekeeper Version | OPA Version |
 | ------------------ | ----------- |
+| `v3.18.1`          | `v0.68.0`   |
 | `v3.18.0`          | `v0.68.0`   |
 | `v3.17.1`          | `v0.67.0`   |
 | `v3.17.0`          | `v0.67.0`   |

website/versioned_docs/version-v3.18.x/install.md

@@ -28,7 +28,7 @@ For either installation method, make sure you have cluster admin permissions:
 If you want to deploy a released version of Gatekeeper in your cluster with a prebuilt image, then you can run the following command:
 
 ```sh
-kubectl apply -f https://raw.githubusercontent.com/open-policy-agent/gatekeeper/v3.18.0/deploy/gatekeeper.yaml
+kubectl apply -f https://raw.githubusercontent.com/open-policy-agent/gatekeeper/v3.18.1/deploy/gatekeeper.yaml
 ```
 
 ### Deploying a Release using development image
@@ -92,7 +92,7 @@ You can alter the variables in `charts/gatekeeper/values.yaml` to customize your
 If you used a prebuilt image to deploy Gatekeeper, then you can delete all the Gatekeeper components with the following command:
 
   ```sh
-  kubectl delete -f https://raw.githubusercontent.com/open-policy-agent/gatekeeper/v3.18.0/deploy/gatekeeper.yaml
+  kubectl delete -f https://raw.githubusercontent.com/open-policy-agent/gatekeeper/v3.18.1/deploy/gatekeeper.yaml
   ```
 
 ### Using make

website/versioned_docs/version-v3.18.x/opa-versions.md

@@ -7,6 +7,7 @@ Gatekeeper depends on [Open Policy Agent](https://www.openpolicyagent.org/). To
 
 | Gatekeeper Version | OPA Version |
 | ------------------ | ----------- |
+| `v3.18.1`          | `v0.68.0`   |
 | `v3.18.0`          | `v0.68.0`   |
 | `v3.17.1`          | `v0.67.0`   |
 | `v3.17.0`          | `v0.67.0`   |