Add Swift 6.2 to test matrix (#970)

Author: ileitch

.github/workflows/test.yml

@@ -39,18 +39,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        step: ["main-snapshot", "16.4", "16.3"]
+        step: ["main-snapshot", "26.0", "16.4"]
         include:
           - step: "main-snapshot"
-            xcode: "16.4"
+            xcode: "26.0"
             swiftly: "main-snapshot"
             continueOnError: true
+          - step: "26.0"
+            xcode: "26.0"
           - step: "16.4"
             xcode: "16.4"
-          - step: "16.3"
-            xcode: "16.3"
-            baseline: "macos-swift-6.1.json"
-    runs-on: macos-15
+    runs-on: macos-26
     continue-on-error: ${{ matrix.continueOnError == true }}
     steps:
     - uses: actions/checkout@master
@@ -101,11 +100,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        swift: ["nightly-main", "6.1"]
+        swift: ["nightly-main", "6.2", "6.1"]
         include:
           - swift: "nightly-main"
             container: "swiftlang/swift:nightly-main"
             continueOnError: true
+          - swift: "6.2"
+            container: "swift:6.2"
           - swift: "6.1"
             container: "swift:6.1"
     runs-on: ubuntu-latest