Update README to reference 6.1 CI jobs instead of 6.0 and add Windows job (#1083)

Author: stmontgomery

README.md

@@ -93,15 +93,15 @@ very best ideas, from anywhere, can help shape the future of testing in Swift.
 The table below describes the current level of support that Swift Testing has
 for various platforms:
 
-| **Platform** | **CI Status (6.0)** | **CI Status (main)** | **Support Status** |
+| **Platform** | **CI Status (6.1)** | **CI Status (main)** | **Support Status** |
 |---|:-:|:-:|---|
-| **macOS** | [![Build Status](https://ci.swift.org/buildStatus/icon?job=swift-testing-main-swift-6.0-macos)](https://ci.swift.org/job/swift-testing-main-swift-6.0-macos/) | [![Build Status](https://ci.swift.org/buildStatus/icon?job=swift-testing-main-swift-main-macos)](https://ci.swift.org/view/Swift%20Packages/job/swift-testing-main-swift-main-macos/) | Supported |
+| **macOS** | [![Build Status](https://ci.swift.org/buildStatus/icon?job=swift-testing-main-swift-6.1-macos)](https://ci.swift.org/job/swift-testing-main-swift-6.1-macos/) | [![Build Status](https://ci.swift.org/buildStatus/icon?job=swift-testing-main-swift-main-macos)](https://ci.swift.org/view/Swift%20Packages/job/swift-testing-main-swift-main-macos/) | Supported |
 | **iOS** | | | Supported |
 | **watchOS** | | | Supported |
 | **tvOS** | | | Supported |
 | **visionOS** | | | Supported |
-| **Ubuntu 22.04** | [![Build Status](https://ci.swift.org/buildStatus/icon?job=swift-testing-main-swift-6.0-linux)](https://ci.swift.org/job/swift-testing-main-swift-6.0-linux/) | [![Build Status](https://ci.swift.org/buildStatus/icon?job=swift-testing-main-swift-main-linux)](https://ci.swift.org/view/Swift%20Packages/job/swift-testing-main-swift-main-linux/) | Supported |
-| **Windows** | | [![Build Status](https://ci-external.swift.org/buildStatus/icon?job=swift-testing-main-swift-main-windows)](https://ci-external.swift.org/job/swift-testing-main-swift-main-windows/) | Supported |
+| **Ubuntu 22.04** | [![Build Status](https://ci.swift.org/buildStatus/icon?job=swift-testing-main-swift-6.1-linux)](https://ci.swift.org/job/swift-testing-main-swift-6.1-linux/) | [![Build Status](https://ci.swift.org/buildStatus/icon?job=swift-testing-main-swift-main-linux)](https://ci.swift.org/view/Swift%20Packages/job/swift-testing-main-swift-main-linux/) | Supported |
+| **Windows** | [![Build Status](https://ci.swift.org/buildStatus/icon?job=swift-testing-main-swift-6.1-windows)](https://ci-external.swift.org/view/all/job/swift-testing-main-swift-6.1-windows/) | [![Build Status](https://ci-external.swift.org/buildStatus/icon?job=swift-testing-main-swift-main-windows)](https://ci-external.swift.org/job/swift-testing-main-swift-main-windows/) | Supported |
 | **Wasm** | | | Experimental |
 
 ### Works with XCTest