CI: create separate artifacts for macos-{13,14,15}

Now the following artifacts are created:
- lima-VERSION-Darwin-macOS13-{arm64,x86_64}.tar.gz
- lima-VERSION-Darwin-macOS14-{arm64,x86_64}.tar.gz
- lima-VERSION-Darwin-macOS15-{arm64,x86_64}.tar.gz
- lima-VERSION-Darwin-{arm64,x86_64}.tar.gz (identical to *-Darwin-macOS15-*)
- lima-VERSION-Linux-{aarch64,x86_64}.tar.gz

Fix issue 2753

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

.github/workflows/release.yml

@@ -13,13 +13,19 @@ on:
     - 'master'
 env:
   GO111MODULE: on
+  MACOS_LATEST_PRODUCT_VERSION: 15
 permissions:
   contents: read
 
 jobs:
   artifacts-darwin:
     name: Artifacts Darwin
-    runs-on: macos-12
+    runs-on: ${{ matrix.runner }}
+    strategy:
+      fail-fast: false
+      matrix:
+        # When you update this list, make sure to update MACOS_LATEST_PRODUCT_VERSION too
+        runner: ["macos-13", "macos-14", "macos-15"]
     timeout-minutes: 20
     steps:
     - name: "Show xcode and SDK version"
@@ -35,7 +41,19 @@ jobs:
       with:
         go-version: 1.23.x
     - name: Make darwin artifacts
-      run: make artifacts-darwin
+      run: |
+        make artifacts-darwin
+        product_version="$(sw_vers --productVersion | cut -d. -f1)"
+        # Rename lima-VERSION-Darwin-arm64.tar.gz to lima-VERSION-Darwin-macOS15-arm64.tar.gz 
+        for f in _artifacts/*; do
+          dst=${f/Darwin/Darwin-macOS${product_version}}
+          if [ ${product_version} = ${MACOS_LATEST_PRODUCT_VERSION} ]; then
+            # For the latest macOS release, preserve lima-VERSION-Darwin-arm64.tar.gz 
+            cp -a "${f}" "${dst}"
+          else
+            mv "${f}" "${dst}"
+          fi
+        done
     - name: "Upload artifacts"
       uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882  # v4.4.3
       with: