feat(deps): update proxyd dependencies

| datasource | package                                                | from    | to      |
| ---------- | ------------------------------------------------------ | ------- | ------- |
| docker     | us-docker.pkg.dev/oplabs-tools-artifacts/images/proxyd | v4.11.0 | v4.12.0 |

charts/proxyd/Chart.yaml

@@ -22,4 +22,4 @@ version: 0.6.4
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
 # renovate: image=us-docker.pkg.dev/oplabs-tools-artifacts/images/proxyd
-appVersion: "v4.11.0"
+appVersion: "v4.12.0"

charts/proxyd/README.md

@@ -2,7 +2,7 @@
 
 Deploy and scale [proxyd](https://github.com/ethereum-optimism/optimism/tree/develop/proxyd) inside Kubernetes with ease
 
-[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) ![Version: 0.6.4](https://img.shields.io/badge/Version-0.6.4-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: v4.11.0](https://img.shields.io/badge/AppVersion-v4.11.0-informational?style=flat-square)
+[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) ![Version: 0.6.4](https://img.shields.io/badge/Version-0.6.4-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: v4.12.0](https://img.shields.io/badge/AppVersion-v4.12.0-informational?style=flat-square)
 
 ## Introduction