Run the bleeding edge codespell in our test

Author: peternewman

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@master
     - uses: actions/setup-python@v1
-    - run: pip install codespell
+    - run: pip install git+https://github.com/codespell-project/codespell.git
     - uses: ./
     - name: Check codespell
       run: codespell test/test.txt || true