Move to newer action (#4)

Resolution for #3

Author: AndreRenaud

.github/workflows/build_and_test.yaml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Install dependencies
         run: |
           sudo apt-get update