ci: update GitHub Actions to latest versions

.github/workflows/ci.yml

@@ -14,18 +14,18 @@ jobs:
         python-version: [3.8, 3.9, "3.10"]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4  # Updated from v2
 
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5  # Updated from v2
       with:
         python-version: ${{ matrix.python-version }}
 
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
         pip install -e .
-        pip install -r requirements-dev.txt  # Use your dev requirements file
+        pip install -r requirements-dev.txt
 
     - name: Format code
       run: |
@@ -50,10 +50,10 @@ jobs:
     needs: test
     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@v5
       with:
         python-version: "3.10"
 
@@ -66,7 +66,7 @@ jobs:
       run: python -m build
 
     - name: Upload artifact
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: dist
         path: dist/