release-gem.yml in rays-0.2.1

- old
+ new

@@ -13,10 +13,10 @@
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: 3.2
 
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: setup gems
         run: bundle install
 
       - name: setup dependencies