chore(deps): update codecov/codecov-action action to v3.1.6 (#32)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/dart.yml

@@ -57,6 +57,6 @@ jobs:
       - name: Format coverage
         run: dart pub global run coverage:format_coverage --lcov --in=coverage.json --out=lcov.info --report-on=lib
 
-      - uses: codecov/codecov-action@v3.1.4
+      - uses: codecov/codecov-action@v3.1.6
         with:
           fail_ci_if_error: false