Update ubuntu version in tests (#815)

Specify the pylint version to ensure that tests do work as expected.

.github/workflows/updatesnaptests.yml

@@ -7,10 +7,10 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
-        python-version: ["3.10"]
+        python-version: ["3.12"]
     steps:
     - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
@@ -20,7 +20,7 @@ jobs:
     - name: Install dependencies
       run: |
         python3 -m pip install --upgrade pip
-        python3 -m pip install pylint
+        python3 -m pip install pylint==3.2.7
         python3 -m pip install flake8
         python3 -m pip install requests
         python3 -m pip install pyyaml