fix ci

Author: PauloGoncalvesBH

.github/workflows/contract-testing.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-18.04
     steps:
     - name: Project checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: Node.js Setup
       uses: actions/setup-node@v2
     - name: Installation of Node.js dependencies