Update to 20220606~ynh1 FAILS

[xmgz]

context:

• raspi at home, latest stable ynh, up to date tt-rss app
• no manual intervention on gpg keys config
• update available 20220606~ynh1 from webadmin interface
• pushed update app button

then it fails with this info:

Backing up ttrss before upgrading (may take a while)...
Stopping a systemd service...
Ensuring downward compatibility...
'/etc/cron.d/ttrss' wasn't deleted because it doesn't exist.
Making sure dedicated system user exists...
Upgrading source files...
Upgrading dependencies...
gpg: no valid OpenPGP data found.
W: GPG error: https://packages.sury.org/php buster InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B188E2B695BD4743
E: The repository 'https://packages.sury.org/php buster InRelease' is not signed.
[Error] Upgrade failed.
27063 W: GPG error: https://packages.sury.org/php buster InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B188E2B695BD4743
27065 E: The repository 'https://packages.sury.org/php buster InRelease' is not signed.
The app was restored to the way it was before the failed upgrade.

thank you for your work

[yalh76]

That was a temporary error from https://packages.sury.org