Remove Ubuntu 20.04 from workflows as the runner has been retired.

martinwhitaker · martinwhitaker · commit b11749e04c19 · 2025-05-11T11:59:04.000+01:00
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -42,7 +42,6 @@ jobs:
       fail-fast: false
       matrix:
         os: [
-          '20.04',
           '22.04',
           '24.04'
         ]
