chore: add codecov to test workflow

.github/workflows/test.yml

@@ -31,14 +31,5 @@ jobs:
       - name: Test
         run: go test -coverprofile=coverage.txt -covermode=atomic ./...
 
-      - name: Upload binary files (linux_arm)
+      - name: Upload coverage reports to Codecov
-        uses: actions/upload-artifact@v2
+        uses: codecov/codecov-action@v2
-        with:
-          name: cloudreve_linux_arm
-          path: release/cloudreve*linux_arm.*
-
-      - name: Upload binary files (linux_arm64)
-        uses: actions/upload-artifact@v2
-        with:
-          name: cloudreve_linux_arm64
-          path: release/cloudreve*linux_arm64.*