[TRASH-34992] bedrock_server preview 1.20.20.23 crashes on Ubuntu 20.04

bedrock_server 1.20.13.01 works on both 20.04 and 22.04. Meanwhile preview 1.20.20.23 crashes on 20.04. bedrock_server_how_to.html says "The Linux version of the Bedrock Server requires Ubuntu 18 or later." https://feedback.minecraft.net/hc/en-us/articles/17381681401357 says "Note for Linux users: Ubuntu 18.04 LTS (Bionic Beaver) will reach End of Standard Support in 2023. Accordingly, the Linux Minecraft Dedicated Server will also raise its minimum target Ubuntu version to 20.04 LTS (Focal Fossa) in a later 1.20 update (exact release to be determined)."

Ubuntu 20.04:

vincent294@todd-howard:~$ journalctl _SYSTEMD_UNIT=mcbe@testme.service -o cat --no-pager
...
/opt/MC/bedrock/testme/bedrock_server: /lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.30' not found (required by /opt/MC/bedrock/testme/bedrock_server)
vincent294@todd-howard:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.6 LTS
Release:        20.04
Codename:       focal

Ubuntu 22.04:

vincent294@todd-howard:~/MCscripts$ journalctl _SYSTEMD_UNIT=mcbe@testme.service -o cat --no-pager
...
NO LOG FILE! - setting up server logging...
[2023-07-29 21:56:17:213 INFO] Starting Server
[2023-07-29 21:56:17:213 INFO] Version: 1.20.20-beta23
vincent294@todd-howard:~/MCscripts$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 22.04.2 LTS
Release:        22.04
Codename:       jammy