ethereal binary is not compatible with glibc shipped with ubuntu 20.04

[ilkermanap]

The binary downloaded from https://github.com/wealdtech/ethereal/releases/download/v2.8.7/ethereal-2.8.7-linux-amd64.tar.gz is not compatible with glibc shipped with ubuntu 20.04

Only tested with ubuntu 20.04 (new plain install without anysnap) and it failed to execute, but will also test with ubuntu 22.04.

Either add a notification for which operating system should be used without problems, or notify wealdtech for adding new binaries that is compatible with ubuntu 20.04

ilker@testubuntu2004:~$ ./ethereal 
./ethereal: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by ./ethereal)
./ethereal: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.33' not found (required by ./ethereal)
./ethereal: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by ./ethereal)
ilker@testubuntu2004:~$ ldd ethereal 
./ethereal: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by ./ethereal)
./ethereal: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.33' not found (required by ./ethereal)
./ethereal: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by ./ethereal)
	linux-vdso.so.1 (0x00007ffe5befc000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fdefbf70000)
	/lib64/ld-linux-x86-64.so.2 (0x00007fdefc16b000)
ilker@testubuntu2004:~$ sha1sum  ethereal 
09bf21443d3799ca65f52b54de4d90a3d11512bf  ethereal