Update cozystack-installer.yaml (#453)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Updated the `cozystack` and `darkhttpd` container images to version
`v0.17.1`, enhancing application performance and security.
- **Bug Fixes**
- Ensured the application retains its configuration settings for optimal
operation within the Kubernetes environment.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

manifests/cozystack-installer.yaml

@@ -68,7 +68,7 @@ spec:
       serviceAccountName: cozystack
       containers:
       - name: cozystack
-        image: "ghcr.io/aenix-io/cozystack/cozystack:v0.17.0"
+        image: "ghcr.io/aenix-io/cozystack/cozystack:v0.17.1"
         env:
         - name: KUBERNETES_SERVICE_HOST
           value: localhost
@@ -87,7 +87,7 @@ spec:
             fieldRef:
               fieldPath: metadata.name
       - name: darkhttpd
-        image: "ghcr.io/aenix-io/cozystack/cozystack:v0.17.0"
+        image: "ghcr.io/aenix-io/cozystack/cozystack:v0.17.1"
         command:
         - /usr/bin/darkhttpd
         - /cozystack/assets