feat(deps): update nimbus dependencies

| datasource | package              | from              | to                |
| ---------- | -------------------- | ----------------- | ----------------- |
| docker     | statusim/nimbus-eth2 | multiarch-v25.3.1 | multiarch-v25.5.0 |

Author: graphops-renovate[bot]

charts/nimbus/Chart.yaml

@@ -22,4 +22,4 @@ version: 0.6.3
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
 # renovate: image=statusim/nimbus-eth2
-appVersion: "multiarch-v25.3.1"
+appVersion: "multiarch-v25.5.0"

charts/nimbus/README.md

@@ -2,7 +2,7 @@
 
 Deploy and scale [Nimbus](https://github.com/status-im/nimbus-eth2) inside Kubernetes with ease
 
-[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) ![Version: 0.6.3](https://img.shields.io/badge/Version-0.6.3-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: multiarch-v25.3.1](https://img.shields.io/badge/AppVersion-multiarch--v25.3.1-informational?style=flat-square)
+[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) ![Version: 0.6.3](https://img.shields.io/badge/Version-0.6.3-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: multiarch-v25.5.0](https://img.shields.io/badge/AppVersion-multiarch--v25.5.0-informational?style=flat-square)
 
 ## Chart Features