Difficulties get installation on Ubuntu 22 VM

[Ronnnnny]

Hello All,

I do run Ubuntu Jammy.

If I try to do:
echo "deb https://repo.delellis.com.ar/ jammy jammy" > /etc/apt/sources.list.d/20-pdlib.list
I get an error message but this seem to work:
sudo su -c "echo 'deb https://repo.delellis.com.ar/ jammy jammy' > /etc/apt/sources.list.d/20-pdlib.list"

Next step:
wget -qO - https://repo.delellis.com.ar/repo.gpg.key | sudo apt-key add -
This give me this message:
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
OK
This is supposedly only a warning message

Next step:
sudo apt update
This give me lots of messages:
Get:10 https://repo.delellis.com.ar/ jammy InRelease [3,651 B]
Err:10 https://repo.delellis.com.ar/ jammy InRelease
The following signatures were invalid: EXPKEYSIG 39217939ED3D07DB Matias De lellis <[email protected]>
Reading package lists... Done
W: https://repo.delellis.com.ar/dists/jammy/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.
W: GPG error: https://repo.delellis.com.ar/ jammy InRelease: The following signatures were invalid: EXPKEYSIG 39217939ED3D07DB Matias De lellis <[email protected]>
E: The repository 'https://repo.delellis.com.ar/ jammy InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

Than the final command should be:
sudo apt install php8.1-pdlib
this gives me:
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package php8.1-pdlib
E: Couldn't find any package by glob 'php8.1-pdlib'

After this dead end I tried the hard way and the test runs into these two error messages:
SKIP Full test for face recognition - download models, detect faces, landmark detection and face recognition. [tests/integration_face_recognition.phpt] reason: bz2 extension missing
FAIL Just test php extension version [tests/version.phpt]
I do have bz2 installed but php does not seems to be able to find the .so library as running this command:
php -m | grep pdlib
gives me this:
PHP Warning: PHP Startup: Unable to load dynamic library 'pdlib.so' (tried: /usr/lib/php/20210902/pdlib.so (/usr/lib/php/20210902/pdlib.so: cannot open shared object file: No such file or directory), /usr/lib/php/20210902/pdlib.so.so (/usr/lib/php/20210902/pdlib.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
php -m | grep pdlib

Would you be able to help me further?

Thanks in advance