docs: add macos-14 to the github actions example [skip ci]

Author: aminya

README.md

@@ -46,7 +46,7 @@ sudo npx setup-cpp --compiler llvm --cmake true --ninja true --ccache true --vcp
 source ~/.cpprc # activate cpp environment variables
 ```
 
-NOTE: In the `compiler` entry, you can specify the version after `-` like `llvm-11.0.0`. For the tools, you can pass a specific version instead of `true` that chooses the default version
+NOTE: In the `compiler` entry, you can specify the version after `-` like `llvm-18`. For the tools, you can pass a specific version instead of `true` that chooses the default version
 
 NOTE: On Unix systems, when `setup-cpp` is used locally or in other CI services like GitLab, the environment variables are added to `~/.cpprc`. You should run `source ~/.cpprc` to immediately activate the environment variables. This file is automatically sourced in the next shell restart from `~/.bashrc` or `~/.profile` if `SOURCE_CPPRC` is not set to `0`. To deactivate `.cpprc` in the next shell restart, rename/remove `~/.cpprc`.
 
@@ -115,11 +115,12 @@ jobs:
         os:
           - windows-2022
           - ubuntu-24.04
-          - macos-12
+          - macos-14 # arm64
+          - macos-13
         compiler:
           - llvm
           - gcc
-          # you can specify the version after `-` like `llvm-13.0.0`.
+          # you can specify the version after `-` like `llvm-18`.
         include:
           - os: "windows-2022"
             compiler: "msvc"