Update GitHub Actions workflow to auto-release PHAR

The GitHub Actions workflow has been improved to automatically release the PHAR artifact. This removes the need for manual attaching of the PHAR to the release. It now uses the `softprops/action-gh-release@v2` action, which eliminates the necessity for separate download and attach artifact steps.

.github/workflows/release-phar.yml

@@ -38,15 +38,9 @@ jobs:
           name: asd.phar
           path: bin/asd.phar
 
-      - name: Download PHAR
-        uses: actions/download-artifact@v2
+      - name: Release
+        uses: softprops/action-gh-release@v2
+        if: startsWith(github.ref, 'refs/tags/')
         with:
-          name: asd.phar
-
-      - name: Attach artifacts to release
-        uses: actions/upload-release-asset@v1
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./bin/asd.phar
-          asset_name: asd.phar
-          asset_content_type: application/octet-stream
+          files: |
+            bin/asd.phar