chore(deps): update codecov/codecov-action action to v2

Author: renovate-bot

.github/workflows/go.yml

@@ -115,7 +115,7 @@ jobs:
           git --no-pager diff go.mod go.sum
           git --no-pager diff --quiet go.mod go.sum
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v1.5.2
+        uses: codecov/codecov-action@2.0.0
         with:
           #token: ${{ secrets.CODECOV_TOKEN }}
           file: ./coverage.txt
@@ -158,7 +158,7 @@ jobs:
       - name: Run tests on Unix-like operating systems
         run: make unittest
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v1.5.2
+        uses: codecov/codecov-action@2.0.0
         with:
           #token: ${{ secrets.CODECOV_TOKEN }}
           file: ./coverage.txt