Use setup-python

Author: MakisH

.github/workflows/build.yml

@@ -9,9 +9,12 @@ jobs:
     steps:
     - name: Check out repository
       uses: actions/checkout@v4
+    - name: Setup python
+      uses: actions/setup-python@v5
+      with:
+         python-version: '3.x'
     - name: Prepare system
       run: |
-        apt-get update && apt-get install -y python3-venv
         python3 -m venv .venv && source .venv/bin/activate
         pip install poppler-utils pandoc-fignos
     - name: Build