[fix]: fix image libbpf build version (#1860)

Signed-off-by: Sam Yuan <[email protected]>

build/Dockerfile

@@ -56,7 +56,7 @@ RUN set -e -x ;\
 		microdnf clean all
 
 COPY --from=builder /workspace/_output/bin/kepler /usr/bin/kepler
-COPY --from=builder /libbpf-source/linux-5.14.0-424.el9/tools/bpf/bpftool/bpftool /usr/bin/bpftool
+COPY --from=builder /libbpf-source/linux-5.14.0-473.el9/tools/bpf/bpftool/bpftool /usr/bin/bpftool
 
 RUN mkdir -p /var/lib/kepler/data
 COPY --from=builder /workspace/data/cpus.yaml /var/lib/kepler/data/cpus.yaml