workflow: fix typo in "python-version" variable's name

.github/workflows/python.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python-verison: ['3.9']
+        python-version: ['3.9']
     steps:
     - uses: actions/checkout@v3
     - uses: actions/setup-python@v3
@@ -69,7 +69,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python-verison: ['3.9']
+        python-version: ['3.9']
     steps:
     - uses: actions/checkout@v3
     - uses: actions/setup-python@v3