ci: update actions

.github/workflows/main.yml

@@ -14,13 +14,13 @@ jobs:
         python-version: [3.8, 3.9, '3.10', '3.11', '3.12']
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
       - name: Set up Pip cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         id: pip-cache
         with:
           path: ~/.cache/pip
@@ -48,9 +48,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: 3.8
       - name: Set Poetry cache
@@ -79,11 +79,11 @@ jobs:
     if: ${{ github.ref=='refs/heads/main' && github.event_name!='pull_request' }}
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Setup Python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
-          python-version: 3.7
+          python-version: 3.8
       - name: Check release
         id: check_release
         run: |