GHA: Build against Swift 6.2

Also update to setup-xcode 1.6.0.

Author: helje5

.github/workflows/swift.yml

@@ -14,7 +14,7 @@ jobs:
       matrix:
         image:
           - swift:5.9-jammy
-          - swift:6.1-noble
+          - swift:6.2-jammy
     container: ${{ matrix.image }}
     steps:
       - name: Checkout Repository
@@ -29,7 +29,7 @@ jobs:
     runs-on: macos-latest
     steps:
       - name: Select latest available Xcode
-        uses: maxim-lobanov/setup-xcode@v1.5.1
+        uses: maxim-lobanov/setup-xcode@v1.6.0
         with:
           xcode-version: latest
       - name: Checkout Repository