workflows/test.yml: update main snapshots, add 6.3 snapshot

Author: MaxDesiatov

.github/workflows/test.yml

@@ -19,14 +19,19 @@ jobs:
               download-url: https://download.swift.org/swift-6.1-release/ubuntu2204/swift-6.1-RELEASE/swift-6.1-RELEASE-ubuntu22.04.tar.gz
             wasi-backend: Node
             target: "wasm32-unknown-wasi"
-          - os: ubuntu-22.04
+          - os: ubuntu-24.04
+            toolchain:
+              download-url: https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT-SNAPSHOT-2025-12-01-a/swift-DEVELOPMENT-SNAPSHOT-2025-12-01-a-ubuntu24.04.tar.gz
+            wasi-backend: Node
+            target: "wasm32-unknown-wasip1"
+          - os: ubuntu-24.04
             toolchain:
-              download-url: https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT-SNAPSHOT-2025-09-14-a/swift-DEVELOPMENT-SNAPSHOT-2025-09-14-a-ubuntu22.04.tar.gz
+              download-url: https://download.swift.org/swift-6.3-branch/ubuntu2404/swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-05-a/swift-6.3-DEVELOPMENT-SNAPSHOT-2025-12-05-a-ubuntu24.04.tar.gz
             wasi-backend: Node
             target: "wasm32-unknown-wasip1"
           - os: ubuntu-22.04
             toolchain:
-              download-url: https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT-SNAPSHOT-2025-09-14-a/swift-DEVELOPMENT-SNAPSHOT-2025-09-14-a-ubuntu22.04.tar.gz
+              download-url: https://download.swift.org/development/ubuntu2204/swift-DEVELOPMENT-SNAPSHOT-2025-12-01-a/swift-DEVELOPMENT-SNAPSHOT-2025-12-01-a-ubuntu22.04.tar.gz
             wasi-backend: Node
             target: "wasm32-unknown-wasip1-threads"