chore(deps): update codecov/codecov-action action to v6 (#48)

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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -100,7 +100,7 @@ jobs:
         run: deno task coverage
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           files: ./coverage/lcov.info
           fail_ci_if_error: false