Fixed wrong specification of python-version in pylint test.

.github/workflows/pytest.yaml

@@ -5,19 +5,15 @@ on:
 
 jobs:
     pylint:
-        strategy:
-            matrix:
-                python-version: ['3.11']
-
         runs-on: ubuntu-latest
 
         steps:
           - uses: actions/checkout@v4
 
-          - name: Set up Python ${{ inputs.python-version }}
+          - name: Set up Python 3.11
             uses: actions/setup-python@v5
             with:
-              python-version: ${{ inputs.python-version }}
+              python-version: '3.11'
 
           - name: Install pylint
             run:  |