Removed Swift section and upped macOS for GitHub Actions.

.github/workflows/documentation.yml

@@ -19,16 +19,12 @@ jobs:
     environment:
       name: github-pages
       url: ${{ steps.deployment.outputs.page_url }}
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Pages
         uses: actions/configure-pages@v4
-      - name: Setup Swift
-        uses: swift-actions/setup-swift@v1
-        with:
-          swift-version: "5.10"
       - name: Build documentation
         run: |
           swift package --allow-writing-to-directory ./docs \