Cleaner name in api tests github action

Author: alexisthual

.github/workflows/api_unit_tests.yml

@@ -16,23 +16,23 @@ jobs:
       matrix:
         include:
           - os: ubuntu-latest
-            version_python: "3.7"
+            python_version: "3.7"
           - os: ubuntu-latest
-            version_python: "3.8"
+            python_version: "3.8"
           - os: ubuntu-latest
-            version_python: "3.9"
+            python_version: "3.9"
           - os: ubuntu-latest
-            version_python: "3.10"
+            python_version: "3.10"
           - os: ubuntu-latest
-            version_python: "3.11"
+            python_version: "3.11"
           - os: macos-latest
-            version_python: "3.7"
+            python_version: "3.7"
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: ${{ matrix.version_python }}
+          python-version: ${{ matrix.python_version }}
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip