[doc] Mark macOS-12 as deprecated (#10732)

README.md

@@ -30,7 +30,7 @@ To build a VM machine from this repo's source, see the [instructions](docs/creat
 | macOS 14 Arm64 |`macos-latest`, `macos-14`, `macos-latest-xlarge` or `macos-14-xlarge`| [macOS-14-arm64] | ![Endpoint Badge](https://img.shields.io/endpoint?url=https%3A%2F%2Fgist.githubusercontent.com%2Fijunaidm%2F0b5459bbe18604a639e1d2f7accd204f%2Fraw%2Fmacos-14-arm64.json) |
 | macOS 13 | `macos-13` or `macos-13-large` | [macOS-13] | ![Endpoint Badge](https://img.shields.io/endpoint?url=https%3A%2F%2Fgist.githubusercontent.com%2Fijunaidm%2F0b5459bbe18604a639e1d2f7accd204f%2Fraw%2Fmacos-13.json) |
 | macOS 13 Arm64 | `macos-13-xlarge` | [macOS-13-arm64] | ![Endpoint Badge](https://img.shields.io/endpoint?url=https%3A%2F%2Fgist.githubusercontent.com%2Fijunaidm%2F0b5459bbe18604a639e1d2f7accd204f%2Fraw%2Fmacos-13-arm64.json) |
-| macOS 12 | `macos-12` or `macos-12-large`| [macOS-12] | ![Endpoint Badge](https://img.shields.io/endpoint?url=https%3A%2F%2Fgist.githubusercontent.com%2Fijunaidm%2F0b5459bbe18604a639e1d2f7accd204f%2Fraw%2Fmacos-12.json) |
+| macOS 12 <sup>deprecated</sup> | `macos-12` or `macos-12-large`| [macOS-12] | ![Endpoint Badge](https://img.shields.io/endpoint?url=https%3A%2F%2Fgist.githubusercontent.com%2Fijunaidm%2F0b5459bbe18604a639e1d2f7accd204f%2Fraw%2Fmacos-12.json) |
 | Windows Server 2022 | `windows-latest` or `windows-2022` | [windows-2022] | ![Endpoint Badge](https://img.shields.io/endpoint?url=https%3A%2F%2Fgist.githubusercontent.com%2Fijunaidm%2F0b5459bbe18604a639e1d2f7accd204f%2Fraw%2Fwin22.json) |
 | Windows Server 2019 | `windows-2019` | [windows-2019] | ![Endpoint Badge](https://img.shields.io/endpoint?url=https%3A%2F%2Fgist.githubusercontent.com%2Fijunaidm%2F0b5459bbe18604a639e1d2f7accd204f%2Fraw%2Fwin19.json) |
 
@@ -83,7 +83,7 @@ latest 2 versions of an OS.
 GitHub Actions and Azure DevOps use the `-latest` YAML label (ex: `ubuntu-latest`, `windows-latest`, and `macos-latest`). These labels point towards the newest stable OS version available.
 
 
-The `-latest` migration process is gradual and happens over 1-2 months in order to allow customers to adapt their workflows to the newest OS version. During this process, any workflow using the `-latest` label, may see changes in the OS version in their workflows or pipelines. To avoid unwanted migration, users can specify a specific OS version in the yaml file (ex: macos-12, windows-2022, ubuntu-22.04).
+The `-latest` migration process is gradual and happens over 1-2 months in order to allow customers to adapt their workflows to the newest OS version. During this process, any workflow using the `-latest` label, may see changes in the OS version in their workflows or pipelines. To avoid unwanted migration, users can specify a specific OS version in the yaml file (ex: macos-14, windows-2022, ubuntu-22.04).
 
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