GLIBC error in Ubuntu 20.04

[dareste]

Describe the bug

kubectl nginx-supportpkg fails in Ubuntu 20.04:

/home/ubuntu/.krew/bin/kubectl-nginx_supportpkg: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by /home/ubuntu/.krew/bin/kubectl-nginx_supportpkg)
/home/ubuntu/.krew/bin/kubectl-nginx_supportpkg: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by /home/ubuntu/.krew/bin/kubectl-nginx_supportpkg)

To Reproduce

• Deploy Ubuntu 20.04.x.
• Install kubectl-nginx_supportpkg 0.1.3 or inferior.
• Run it, see the error.

Expected behavior
Should run as expected.