fix: contracts testing worflow

Author: jaybuidl

.github/workflows/contracts-testing.yml

@@ -66,7 +66,7 @@ jobs:
       working-directory: contracts
 
     - name: Upload a build artifact
-      uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce # v3.1.2
+      uses: actions/upload-artifact@v4.6.1
       with:    
         name: code-coverage-report    
         path: contracts/coverage