Update codecov/codecov-action digest to 303a32d (#457)

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

Author: renovate[bot]

.github/workflows/tests.yaml

@@ -18,6 +18,6 @@ jobs:
       - run: uv run ./bin/lint
       - run: uv run ./bin/test
       - name: Upload coverage reports to Codecov
-        uses: codecov/codecov-action@0b35c9ecc4f0529d0eb674914510c22f85b196b4 # v7
+        uses: codecov/codecov-action@303a32d7a59b442fa8d48b6a1cc6825c09c847a5 # v7
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}