SWI-7167 - Replacing ubuntu-20.04 by ubuntu-24.04 on test-pr workflow

Author: jgutierrezglez

.github/workflows/test-pr.yml

@@ -31,8 +31,8 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-          os: [windows-2022, windows-2019, ubuntu-20.04, ubuntu-22.04]
-          ruby-version: ['3.0', 3.1, 3.2, 3.3]
+          os: [windows-2019, windows-2022, ubuntu-22.04, ubuntu-24.04]
+          ruby-version: [3.0, 3.1, 3.2, 3.3]
       fail-fast: false
     steps:
       - name: Checkout