Add job to CI, covering Library Evolution Makefile target

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ concurrency:
 jobs:
   macos:
     name: macOS (Xcode ${{ matrix.xcode }})
-    runs-on: macos-14
+    runs-on: macos-latest
     strategy:
       matrix:
         xcode:
@@ -31,6 +31,23 @@ jobs:
       - name: Run tests
         run: make test-swift
 
+  macos-library-evolution:
+    name: macOS Library Evolution (Xcode ${{ matrix.xcode }})
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        xcode:
+          - '15.4'
+          - '16.0'
+    steps:
+      - uses: actions/checkout@v4
+      - name: Select Xcode ${{ matrix.xcode }}
+        run: sudo xcode-select -s /Applications/Xcode_${{ matrix.xcode }}.app
+      - name: Print Swift version
+        run: swift --version
+      - name: Build for Library Evolution
+        run: make build-for-library-evolution
+
   linux:
     strategy:
       matrix: