Update format action to use Xcode 16 (#3548)

.github/workflows/format.yml

@@ -12,18 +12,16 @@ concurrency:
 jobs:
   swift_format:
     name: swift-format
-    runs-on: macos-13
+    runs-on: macos-15
+    permissions:
+      contents: write
     steps:
       - uses: actions/checkout@v4
-      - name: Select Xcode 14.3
-        run: sudo xcode-select -s /Applications/Xcode_14.3.app
-      - name: Install swift-format
-        run: brew install swift-format
+      - name: Select Xcode 16.2
+        run: sudo xcode-select -s /Applications/Xcode_16.2.app
       - name: Format
         run: make format
-      - uses: stefanzweifel/git-auto-commit-action@v4
+      - uses: stefanzweifel/git-auto-commit-action@v5
         with:
           commit_message: Run swift-format
           branch: 'main'
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Makefile

@@ -64,7 +64,7 @@ format:
 		-path '*/Documentation.docc' -prune -o \
 		-name '*.swift' \
 		-not -path '*/.*' -print0 \
-		| xargs -0 swift format --ignore-unparsable-files --in-place
+		| xargs -0 xcrun swift-format --ignore-unparsable-files --in-place
 
 .PHONY: build-for-library-evolution format warm-simulator xcodebuild xcodebuild-raw