chore(deps): bump codecov/codecov-action from 3 to 4 (#4362)

Author: dependabot[bot]

.github/workflows/tests.yaml

@@ -180,7 +180,7 @@ jobs:
         run: |
           go install github.com/wadey/gocovmerge@latest
           gocovmerge */coverage.txt > coverage.txt
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           fail_ci_if_error: true
           files: ./coverage.txt