Use codecov GH action

Author: jarrodmillman

.github/workflows/coverage.yml

@@ -30,4 +30,6 @@ jobs:
           python -m pytest --cov=lazy_loader --durations=10
           # Tests fail if using `--doctest-modules`. I.e.,
           # python -m pytest --cov=lazy_loader --doctest-modules --durations=20
-          codecov
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v3

pyproject.toml

@@ -23,7 +23,7 @@ dynamic = ["description"]
 
 
 [project.optional-dependencies]
-test = ["pytest >= 7.2", "pytest-cov >= 4.0", "codecov >= 2.1"]
+test = ["pytest >= 7.2", "pytest-cov >= 4.0"]
 lint = ["pre-commit >= 3.1"]
 
 [project.urls]