README Badges for individual platforms seem to have lost support

So, either the CI job gets divided over platforms or we get one badge for all CI

README.md

@@ -1,8 +1,6 @@
 # cargo2nix
 
-[![all builds & CI](https://github.com/cargo2nix/cargo2nix/actions/workflows/ci.yml/badge.svg)](https://github.com/cargo2nix/cargo2nix/actions/?workflow=CI)
-[![build on Linux](https://badgen.net/github/checks/cargo2nix/cargo2nix/release-0.11.0/ubuntu)](https://github.com/cargo2nix/cargo2nix/actions/?workflow=CI)
-[![build on Darwin](https://badgen.net/github/checks/cargo2nix/cargo2nix/release-0.11.0/mac)](https://github.com/cargo2nix/cargo2nix/actions/?workflow=CI)
+[![darwin & linux CI](https://github.com/cargo2nix/cargo2nix/actions/workflows/ci.yml/badge.svg)](https://github.com/cargo2nix/cargo2nix/actions/?workflow=CI)
 [![flakes supported](https://img.shields.io/badge/flake-supported-green)](https://nixos.wiki/wiki/Flakes)
 [![latest release](https://img.shields.io/github/v/tag/cargo2nix/cargo2nix?color=%23009922&label=release)](https://github.com/cargo2nix/cargo2nix/releases)