[fix]: fix image libbpf build version

[SamYuan1990]

ref https://github.com/sustainable-computing-io/kepler/actions/runs/11985980953/job/33419265828
fix libbpf build version in container image

[github-actions]

🤖 SeineSailor

Here is a concise summary of the pull request changes:

Summary: This pull request updates the libbpf build version in the container image by modifying the bpftool path in the Dockerfile from linux-5.14.0-424.el9 to linux-5.14.0-473.el9. This change ensures the correct version of libbpf is used, potentially affecting bpftool-related operations. However, it does not alter function signatures, global data structures, or variables, nor does it impact the external interface of the code.

Observations:

• The change is focused on correcting the libbpf build version, which may have implications for bpftool-related functionality.
• The update does not introduce any changes to the external interface of the code, making it a relatively isolated change.

Suggestions for improvement:

• Consider adding a brief explanation in the PR description about the motivation behind updating the libbpf build version and any potential benefits or implications for the project.
• Verify that the updated libbpf version does not introduce any compatibility issues or breaking changes in the codebase.