docs: update package documentation (#663)

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README.md

@@ -410,7 +410,7 @@ This project is developed entirely in [Nix Flakes](https://wiki.nixos.org/wiki/F
 #### vouch
 
 - **Description**: An Ethereum 2 multi-node validator client
-- **Version**: 1.9.2
+- **Version**: 1.11.1
 - **Source**: unknown
 - **License**: Check package
 - **Homepage**: https://github.com/attestantio/vouch