Update codecov/codecov-action action to v5.1.2 (#224)

Author: hugovk

.github/workflows/test.yml

@@ -47,7 +47,7 @@ jobs:
           uvx --with tox-uv tox -e py
 
       - name: Upload coverage
-        uses: codecov/codecov-action@v5.1.1
+        uses: codecov/codecov-action@v5.1.2
         with:
           flags: ${{ matrix.os }}
           name: ${{ matrix.os }} Python ${{ matrix.python-version }}