chore(deps): Update codecov/codecov-action digest to 894ff02 (#835)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| codecov/codecov-action | action | digest | `cc7fb3f` -> `894ff02` |

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Author: cq-bot

.github/workflows/unittest.yml

@@ -49,4 +49,4 @@ jobs:
         run: go test -race -coverprofile=coverage.out -covermode=atomic  ./...
       - name: Upload coverage to Codecov
         if: always() && matrix.os == 'ubuntu-latest'
-        uses: codecov/codecov-action@cc7fb3f71c712c470a895ac29f8a1fd0fcb52c8a
+        uses: codecov/codecov-action@894ff025c7b54547a9a2a1e9f228beae737ad3c2