Downgrade glibc in compiled binaries

[encounter]

New Ubuntu GHA runner is too new:

./objdiff-linux-x86_64: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.39' not found (required by ./objdiff-linux-x86_64)
./objdiff-linux-x86_64: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.38' not found (required by ./objdiff-linux-x86_64)