Merge pull request #32 from Cysharp/feature/artifact

ci: change upload-artifact & download-artifact to Cysharp/Actions

Author: guitarrapc

.github/workflows/build-release.yml

@@ -63,10 +63,11 @@ jobs:
           directory: RuntimeUnitTestToolkit
 
       # Store artifacts.
-      - uses: actions/upload-artifact@v1
+      - uses: Cysharp/Actions/.github/actions/upload-artifact@main
         with:
           name: RuntimeUnitTestToolkit.${{ inputs.tag }}.unitypackage
           path: ./RuntimeUnitTestToolkit/RuntimeUnitTestToolkit.${{ inputs.tag }}.unitypackage
+          retention-days: 1
 
   # release
   create-release: