It's enought to run pylint on 3.9

Signed-off-by: Stefan Marr <git@stefan-marr.de>

.github/workflows/ci.yml

@@ -54,7 +54,7 @@ jobs:
         run: |
           pip install pylint
           pylint rebench
-        if: startsWith(matrix.python-version, '3.')
+        if: matrix.python-version == '3.9'
 
       - name: Upload coverage results to Coveralls
         run: coveralls