chore(dependencies): update codecov/codecov-action action to v3.1.6

Author: renovate[bot]

.github/workflows/test.yml

@@ -19,4 +19,4 @@ jobs:
           CFLAGS: "-DCYTHON_TRACE=1"
           BENCODER_LINETRACE: 1
       - run: python -m pytest --cov=bencoder --cov-report=xml .
-      - uses: codecov/codecov-action@v3.1.4
+      - uses: codecov/codecov-action@v3.1.6