Update Python version to 3.9

Author: RytoEX

.github/workflows/main.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Setup
         uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
@@ -33,7 +33,7 @@ jobs:
       - name: Setup
         uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip