Fix missed actions/checkout update

Author: MSP-Greg

.github/workflows/windows-build-tools.yml

@@ -55,7 +55,7 @@ jobs:
           - { gcc: ucrt64 , ruby: ucrt  }
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1