ci: Run Python 3.7 tests in an older version of Ubuntu

Author: edgarrmondragon

.github/workflows/ci.yaml

@@ -21,19 +21,22 @@ env:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
+        os: [ubuntu-24.04]
         python-version:
-        - "3.7"
         - "3.8"
         - "3.9"
         - "3.10"
         - "3.11"
         - "3.12"
         - "3.13"
         - "3.14"
+        include:
+        - os: ubuntu-22.04
+          python-version: "3.7"
     steps:
       - name: Checkout code
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0