Bumped the embedded cert-manager chart to the latest upstream version.
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## Summary by CodeRabbit
Based on the comprehensive changes across multiple files in the
cert-manager Helm chart, here are the release notes:
- **New Features**
- Added support for dynamic TLS serving certificates for metrics
- Enhanced Prometheus monitoring configuration with ServiceMonitor and
PodMonitor options
- Introduced more flexible IP family configuration for services
- **Improvements**
- Updated cert-manager to version v1.16.3
- Expanded configuration options for controller, webhook, and CA
injector
- Improved RBAC permissions and service account management
- Enhanced documentation and configuration guidance
- **Bug Fixes**
- Deprecated `installCRDs` option in favor of more explicit settings
- Refined namespace and resource selection for webhooks
- **Chores**
- Updated Helm chart dependencies and compatibility
- Improved template rendering and configuration management
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