Update Gadi Babeltrace2 module to 2.1.2-2

[minghangli-uni]

The current Gadi setup instructions and helper scripts still load:

module load model-tools/babeltrace2/2.1.2

However the current ACCESS-NRI/model-tools deployment defines:

  - _name: [babeltrace2]
  - _version: [2.1.2-2]
  # _spack-version informs the branch of spack to use
  - _spack-version: ["1.1"]
  # Release database provenance information - packages for inclusion into the database, and packages just for injection into the modules
  - _provenance: []
  - _injection: []
  specs:
  - babeltrace2@2.1.2

Here 2.1.2 is the upstream Babeltrace2 package version, while 2.1.2-2 is the ACCESS-NRI deployment/module version. The build-cd workflow injects _version into the module projection, so the current module should be loaded as:

module use /g/data/vk83/modules
module load model-tools/babeltrace2/2.1.2-2

The -2 deployment also reflects the updated build configuration, including the move to intel-oneapi-compilers@2025.2.0, target=x86_64_v3, and the updated Python module setup. See ACCESS-NRI/model-tools#24