Bump one CI config to ubuntu-24.04

Author: bjodah

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
             WITH_BFD: yes
             PYTHON_VERSION: '3.12'
             TEST_SYMPY: yes
-            OS: ubuntu-20.04
+            OS: ubuntu-24.04
             CC: gcc
 
           - BUILD_TYPE: Debug