CI: Update Xcode to 26.1 and re-enable main snapshots (#227)

`swift-DEVELOPMENT-SNAPSHOT-2025-11-03-a` includes swiftlang/swift@b219d40, which fixed the blocking crash.

Author: MaxDesiatov

.github/workflows/main.yml

@@ -48,7 +48,7 @@ jobs:
             test-args: "--sanitize address --traits WasmDebuggingSupport"
           # Swift 6.2
           - os: macos-15
-            xcode: Xcode_26.0
+            xcode: Xcode_26.1
             development-toolchain-tag: swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a
             wasi-swift-sdk-download: "https://download.swift.org/development/wasm-sdk/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a_wasm.artifactbundle.tar.gz"
             wasi-swift-sdk-id: swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a_wasm
@@ -139,19 +139,19 @@ jobs:
             build-dev-dashboard: true
             # Disabled until a toolchain containing https://github.com/swiftlang/swift/commit/b219d4089c922ceb8b700424236ca97f6087a9a1
             # is tagged.
-          # - swift: "swiftlang/swift:nightly-main-noble"
-          #   development-toolchain-download: "https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a-ubuntu24.04.tar.gz"
-          #   wasi-swift-sdk-download: "https://download.swift.org/development/wasm-sdk/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a_wasm.artifactbundle.tar.gz"
-          #   wasi-swift-sdk-id: swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a_wasm
-          #   wasi-swift-sdk-checksum: "b64dfad9e1c9ccdf06f35cf9b1a00317e000df0c0de0b3eb9f49d6db0fcba4d9"
-          #   test-args: "--traits WasmDebuggingSupport -Xswiftc -DWASMKIT_CI_TOOLCHAIN_NIGHTLY"
-#           - swift: "swiftlang/swift:nightly-main-noble"
-#             development-toolchain-download: "https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a-ubuntu24.04.tar.gz"
-#             wasi-swift-sdk-download: "https://download.swift.org/development/wasm-sdk/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a_wasm.artifactbundle.tar.gz"
-#             wasi-swift-sdk-id: swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a_wasm
-#             wasi-swift-sdk-checksum: "b64dfad9e1c9ccdf06f35cf9b1a00317e000df0c0de0b3eb9f49d6db0fcba4d9"
-#             test-args: "--traits WasmDebuggingSupport -Xswiftc -DWASMKIT_CI_TOOLCHAIN_NIGHTLY --build-system swiftbuild"
-#             label: " --build-system swiftbuild"
+          - swift: "swiftlang/swift:nightly-main-noble"
+            development-toolchain-download: "https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a-ubuntu24.04.tar.gz"
+            wasi-swift-sdk-download: "https://download.swift.org/development/wasm-sdk/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a_wasm.artifactbundle.tar.gz"
+            wasi-swift-sdk-id: swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a_wasm
+            wasi-swift-sdk-checksum: "b64dfad9e1c9ccdf06f35cf9b1a00317e000df0c0de0b3eb9f49d6db0fcba4d9"
+            test-args: "--traits WasmDebuggingSupport -Xswiftc -DWASMKIT_CI_TOOLCHAIN_NIGHTLY"
+          - swift: "swiftlang/swift:nightly-main-noble"
+            development-toolchain-download: "https://download.swift.org/development/ubuntu2404/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a-ubuntu24.04.tar.gz"
+            wasi-swift-sdk-download: "https://download.swift.org/development/wasm-sdk/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a/swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a_wasm.artifactbundle.tar.gz"
+            wasi-swift-sdk-id: swift-DEVELOPMENT-SNAPSHOT-2025-10-02-a_wasm
+            wasi-swift-sdk-checksum: "b64dfad9e1c9ccdf06f35cf9b1a00317e000df0c0de0b3eb9f49d6db0fcba4d9"
+            test-args: "--traits WasmDebuggingSupport -Xswiftc -DWASMKIT_CI_TOOLCHAIN_NIGHTLY --build-system swiftbuild"
+            label: " --build-system swiftbuild"
 
     runs-on: ubuntu-24.04
     name: "build-linux (${{ matrix.swift }}${{ matrix.label }})"
@@ -301,7 +301,7 @@ jobs:
       - name: Install jq
         run: apt-get update && apt-get install -y jq
       - name: Install Swift SDK
-        run: swift sdk install https://download.swift.org/swift-6.2-release/wasm/swift-6.2-RELEASE/swift-6.2-RELEASE_wasm.artifactbundle.tar.gz --checksum fe4e8648309fce86ea522e9e0d1dc48e82df6ba6e5743dbf0c53db8429fb5224
+        run: swift sdk install https://download.swift.org/swift-6.2.1-release/wasm-sdk/swift-6.2.1-RELEASE/swift-6.2.1-RELEASE_wasm.artifactbundle.tar.gz --checksum 482b9f95462b87bedfafca94a092cf9ec4496671ca13b43745097122d20f18af
       - name: Build with the Swift SDK
         run: swift build --swift-sdk "$(swiftc -print-target-info | jq -r '.swiftCompilerTag')_wasm" --product wasmkit-cli