chore(deps): update codecov/codecov-action action to v6

Author: renovate[bot]

.github/workflows/ci.yml

@@ -58,7 +58,7 @@ jobs:
         run: go test -v -race -coverprofile=coverage.out ./...
 
       - name: Upload coverage reports
-        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5
+        uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6
         with:
           files: ./coverage.out
           flags: unittests