Use poetry in workflow

.github/workflows/pdf-monitor.yml

@@ -11,23 +11,38 @@ jobs:
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v4
+
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
           python-version: 3.12
-          cache: pip
-      - name: Install Dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements.txt
+
+      - name: Install Poetry
+        uses: snok/install-poetry@v1
+        with:
+          version: 1.5.1
+          virtualenvs-create: true
+          virtualenvs-in-project: true
+
+      - name: Load cached venv
+        id: cached-poetry-dependencies
+        uses: actions/cache@v3
+        with:
+          path: .venv
+          key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}
+
+      - name: Install dependencies
+        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
+        run: poetry install --no-interaction --no-root
+
       - name: Find Changed PDF Files
         id: find_pdfs
         run: |
           if [ $(git rev-parse --is-shallow-repository) = true ]; then
             # For shallow clones, fetch the full history
             git fetch --unshallow
           fi
-          
+
           if [ $(git rev-list --count HEAD) -eq 1 ]; then
             # If only one commit exists, list all PDFs
             pdf_files=$(git ls-files '*.pdf')
@@ -36,12 +51,14 @@ jobs:
             pdf_files=$(git diff --name-only HEAD^ HEAD | grep '.pdf$')
           fi
           echo "pdf_files=$pdf_files" >> $GITHUB_ENV
+
       - name: Run Python Script
         if: env.pdf_files != ''
         run: |
           for pdf_file in ${{ env.pdf_files }}; do
-            python main.py "$pdf_file"
+            poetry run python main.py "$pdf_file"
           done
+
       - name: Commit and Push Changes
         if: ${{ env.pdf_files != '' }}
         run: |
@@ -53,4 +70,4 @@ jobs:
           else
             git commit -m "Automated commit of changes made by PDF Monitor Workflow"
             git push
-          fi
+          fi