Update GitHub Actions to use latest versions of checkout and upload-artifact actions

Author: pbosetti

.github/workflows/release.yml

@@ -63,7 +63,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Configure
         shell: bash
@@ -89,7 +89,7 @@ jobs:
         run: cmake --build build --config Release --target package
 
       - name: Upload package artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: package-${{ matrix.id }}
           path: build/*.zip