Revert "ci: Actualiza version de python 3.10"

Referencias:
 - actions/setup-python#207
 - pytest-dev/pytest#8540 (comment)

This reverts commit 05e8867.

.github/workflows/python-package.yml

@@ -53,7 +53,7 @@ jobs:
           --health-retries 5
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9,3.10.0-beta.1 ]
+        python-version: [3.6, 3.7, 3.8, 3.9,3.10.0-alpha.5 ]
 
     steps:
     - uses: actions/checkout@v2