chore(deps): update codecov/codecov-action action to v7

Author: renovate[bot]

.github/workflows/codecov.yml

@@ -17,4 +17,4 @@ jobs:
       - name: Build
         run: go build -v ./...
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v7