Test: do NOT cache go modules (#532)

.github/workflows/test.yml

@@ -33,12 +33,5 @@ jobs:
       - name: Checkout codebase
         uses: actions/checkout@v2
 
-      - name: Cache go module
-        uses: actions/cache@v2
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: ${{ runner.os }}-go-
-
       - name: Test
         run: go test -timeout 1h -v ./...