Update runners to ubuntu-24.04 from deprecated ubuntu-20.04 label

Author: billnapier

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ on:
 jobs:
   linux:
 
-    runs-on: ubuntu-20.04
+    runs-on: 'ubuntu-24.04'
     strategy:
       fail-fast: false
       matrix: