Update CI

Author: Donnype

.github/workflows/tests.yml

@@ -10,7 +10,7 @@ on:
 jobs:
   unit-tests:
     name: Unit tests ${{ matrix.python-version }}
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         python-version: [ "3.10", "3.11", "3.12" ]
@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Build unit tests image
         run: docker build --build-arg PYTHON_VERSION=${{ matrix.python-version }} -t pydfy .
@@ -30,7 +30,7 @@ jobs:
         run: docker run pydfy -m pytest /home/pydfy-user/pydfy
 
   checks:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
 
     steps:
       - uses: actions/checkout@v4