Check out first before running tests

.github/workflows/test.yml

@@ -8,5 +8,7 @@ jobs:
         platform: [ubuntu-latest]
     runs-on: ${{ matrix.platform }}
     steps:
+    - name: Checkout
+      uses: actions/checkout@master
     - name: Test
       run: go test $(go list ./... | grep -Ev 'dialog|example|fone|util')