fixed workflow

.gitea/workflows/tests.yaml

@@ -4,16 +4,15 @@ on: [push, workflow_dispatch]
 
 jobs:
   unittests:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
+    container: catthehacker/ubuntu:act-latest
     steps:
       - name: Check out repository code
         uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.10.12"
-        env:
-          AGENT_TOOLSDIRECTORY: /opt/hostedtoolcache
+          python-version: "3.13"
       - name: Installing dependencies
         run: python -m pip install unittest
       - name: Test with unittest