Bump MPICH Runner to Ubuntu 24.04

Author: ax3l

.github/ci/spack-envs/clang12_py38_mpich_h5_ad2/spack.yaml

@@ -48,7 +48,7 @@ spack:
       extra_rpaths: []
       flags: {}
       modules: []
-      operating_system: ubuntu22.04
+      operating_system: ubuntu24.04
       paths:
         cc: /usr/bin/clang-12
         cxx: /usr/bin/clang++-12

.github/workflows/linux.yml

@@ -159,9 +159,9 @@ jobs:
         cmake --build build --parallel 2
         ctest --test-dir build --output-on-failure
 
-  # ADIOS2 v2.7.1
+  # ADIOS2 v2.10
   clang12_py38_mpich_h5_ad2:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     if: github.event.pull_request.draft == false
     steps:
     - uses: actions/checkout@v4