chore(deps): bump codecov/codecov-action from 5.4.3 to 5.5.1 (#1364)

Author: dependabot[bot]

.github/workflows/codecov.yml

@@ -36,7 +36,7 @@ jobs:
         run: |
           pytest --cov=./slack_bolt/ --cov-report=xml
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@18283e04ce6e62d37312384ff67231eb8fd56d24 # v5.4.3
+        uses: codecov/codecov-action@5a1091511ad55cbe89839c7260b706298ca349f7 # v5.5.1
         with:
           fail_ci_if_error: true
           verbose: true