chore(deps): update codecov/codecov-action digest to c2fcb21

Author: renovate[bot]

.github/workflows/tests.yml

@@ -27,4 +27,4 @@ jobs:
           pdm run pytest --cov=pdm --cov-config=pyproject.toml --cov-report=xml tests
 
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@015f24e6818733317a2da2edd6290ab26238649a # v5
+        uses: codecov/codecov-action@c2fcb216de2b0348de0100baa3ea2cad9f100a01 # v5