chore(ci): remove redundant go mod download step

Author: vmaerten

.github/workflows/test.yml

@@ -27,10 +27,5 @@ jobs:
       - name: Check out code into the Go module directory
         uses: actions/checkout@v6
 
-      - name: Download Go modules
-        run: go mod download
-        env:
-          GOPROXY: https://proxy.golang.org
-
       - name: Test
         run: go run ./cmd/task test