ci: replace ubuntu 20.04 image with 24.04

due to upcoming removal of 20.04 image by GitHub

Author: TheGreatRefrigerator

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
       matrix:
         node-version: [20]
         python-version: ["3.10"]
-        os: [ubuntu-20.04]
+        os: [ubuntu-24.04]
     runs-on: ${{ matrix.os }}
     steps:
       - name: checkout