Update dependencies to latest

.github/workflows/swift.yml

@@ -18,6 +18,14 @@ jobs:
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@v6
+      # swift-testing 6.3.2 (shared by the test targets) has a swift-tools-version
+      # 6.2 manifest, which the runner's default Xcode (Swift 6.1.2) cannot
+      # resolve. Xcode 26.0 ships Swift 6.2 — same version already used by the
+      # iOS job, so it is known to be available on the runner.
+      - name: Select Xcode 26.0
+        uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: "26.0"
       - name: Verify Swift version
         run: swift --version
       - name: Build (macOS)
@@ -92,11 +100,11 @@ jobs:
   build-android:
     # Cross-build the SwiftMail library for Android via skiptools/swift-android-action.
     #
-    # Build-only (no test run): swift-testing 0.12.0 — an exact pin shared by
-    # every test target — does not compile against Bionic, so we validate that
-    # the library cross-compiles rather than the test suites. The earlier
-    # "invalid redeclaration of 'badOS'" blocker is fixed by depending on
-    # swift-nio-imap 0.3.1-pre, which adds Android/Bionic to its libc guards.
+    # Build-only (no test run): the test targets depend on swift-testing, whose
+    # Android compatibility is not validated here, so we check that the library
+    # cross-compiles rather than the test suites. The earlier "invalid
+    # redeclaration of 'badOS'" blocker is fixed upstream by apple/swift-nio-imap
+    # #826 (commit bcf8756), which adds Android/Bionic to NIOIMAPCore's libc guards.
     #
     # Package.swift also drops the ArgumentParser-based CLI demos on Android
     # (keyed on the TARGET_OS_ANDROID env the action sets) to avoid a spurious
@@ -113,7 +121,7 @@ jobs:
           swift-version: "6.3.2"
           # SDK + NDK overrun the runner's ~14 GiB free space.
           free-disk-space: true
-          # Skip building/running the test targets (swift-testing 0.12.0 is not
-          # Android-compatible); build the library + its dependencies only.
+          # Skip building/running the test targets (swift-testing's Android
+          # compatibility is unverified); build the library + its deps only.
           build-tests: false
           run-tests: false

Package.swift

@@ -57,16 +57,21 @@ let package = Package(
             url: "https://github.com/apple/swift-nio-imap",
             revision: "bcf875610ca56dfd7bae869fa19ca3149c075908"
         ),
-        // Pinned to the upstream commit that merged the Windows-SDK BoringSSL
-        // header workarounds (_WINSOCKAPI_/NOMINMAX/NOCRYPT scoped to the
-        // CNIOBoringSSL target, apple/swift-nio-ssl#585). Switch to a normal
-        // `from:` once a release ships with that fix.
+        // Pinned to the latest upstream main, which carries the Windows-SDK
+        // BoringSSL header workarounds (_WINSOCKAPI_/NOMINMAX/NOCRYPT scoped to
+        // the CNIOBoringSSL target, apple/swift-nio-ssl#585). No release contains
+        // that fix yet (latest tag is 2.37.0) — switch to a normal `from:` once
+        // one ships.
         .package(
             url: "https://github.com/apple/swift-nio-ssl",
-            revision: "ae6b517f53289d72b7b0d4495b4609d25065deed"
+            revision: "407d82d5b6cc00e1c3fb83a81b1539b70c788c5e"
         ),
         .package(url: "https://github.com/apple/swift-collections.git", from: "1.0.0"),
-        .package(url: "https://github.com/apple/swift-testing", exact: "0.12.0"),
+        // swift-testing releases track toolchain versions: 6.3.2's manifest is
+        // swift-tools-version 6.2, so every platform that compiles the test
+        // targets needs Swift 6.2+. The macOS CI job selects Xcode 26 for that
+        // reason (Linux/Android/Windows runners are already on Swift 6.3.x).
+        .package(url: "https://github.com/apple/swift-testing", exact: "6.3.2"),
         .package(url: "https://github.com/apple/swift-docc-plugin", from: "1.0.0"),
         .package(url: "https://github.com/apple/swift-argument-parser", from: "1.3.0")
     ],