Github Actions: update aiohttp versions

.github/workflows/python-tests.yml

@@ -9,8 +9,8 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-        aiohttp-version: ['3.8.6', '3.7.4']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
+        aiohttp-version: ['3.7.4', '3.8.6', '3.9.3']
 
     steps:
     - uses: actions/checkout@v4
@@ -33,8 +33,8 @@ jobs:
         pip install flake8
         # Stop the build if there are Python syntax errors or undefined names
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
-        # The GitHub editor is 127 chars wide
-        flake8 . --count --max-complexity=10 --statistics
+        # Run linter; use configuration from file .flake8
+        flake8 . --count --statistics
 
     - name: Install the project
       run: |