updated cache version

.github/workflows/doc.yml

@@ -21,19 +21,20 @@ jobs:
         with:
           path: ./dev
 
+      - name: Setup Python 3.10
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+          architecture: 'x64'
+
       - name: Cache dependencies
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: ~/.cache/pip
-          key: ${{ runner.os }}-pip-${{ hashFiles('dev/requirements.txt') }}
+          key: ${{ runner.os }}-pip-${{ hashFiles('dev/doc-requirements.txt') }}
           restore-keys: |
             ${{ runner.os }}-pip-
 
-      - name: Setup Python 3.10
-        uses: actions/setup-python@v5
-        with:
-          python-version: '3.10'
-          architecture: 'x64'
       - name: Install package
         run: |
           python -m pip install --progress-bar off --upgrade pip setuptools wheel