💚 ci-fix: actions/setup-python으로 PEP 668 pip 설치 오류 수정

.github/workflows/lotto-buy.yml

@@ -12,11 +12,14 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Python 및 의존성 설치
-        run: |
-          apt-get update -qq
-          apt-get install -y python3 python3-pip python3-venv
-          pip3 install -r requirements.txt
+      - name: Python 설정
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+          cache: 'pip'
+
+      - name: 의존성 설치
+        run: pip install -r requirements.txt
 
       - name: Chrome 설치
         uses: browser-actions/setup-chrome@v1