github: make sure we install go 1.16 for tests to pass

.github/workflows/test.yml

@@ -5,20 +5,30 @@ jobs:
     name: Sca
     runs-on: ubuntu-latest
     steps:
+
       - uses: actions/checkout@v2
+
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v2
         with:
           version: v1.42
           args: -c .golangci.yml
+
   test:
     name: Test
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16
+
       - name: Test
         run: |
           go test -race -coverprofile=profile.cov ./...
+
       - name: Send coverage
         uses: shogo82148/actions-goveralls@v1
         with: