Beginners Questions • [Software] Unable to update packages

Code:

(base) berna@grayswan:~$ sudo nala updateError: http://deb.debian.org/debian bookworm-security Release  404  Not Found [IP: 2a04:4e42:8e::644 80]Error: http://deb.anydesk.com all InRelease  The following signatures were invalid: EXPKEYSIG 18DF3741CDFFDE29 philandro Software GmbH <info@philandro.com>╭─ Updating Package List ───────────────────────────────────────────────────────────────────────────────────╮│No Change: http://deb.debian.org/debian bookworm InRelease                                                 ││Ignored:   http://deb.debian.org/debian bookworm-security InRelease                                        ││No Change: https://mirror.iway.ch/debian bookworm InRelease                                                ││Updated:   http://deb.anydesk.com all InRelease [6 KB]                                                     ││No Change: https://linux.teamviewer.com/deb stable InRelease                                               ││Updated:   http://download.opensuse.org/repositories/home:/pbek:/QOwnNotes/Debian_12  InRelease [2 KB]     ││No Change: https://packages.microsoft.com/repos/ms-teams stable InRelease                                  ││No Change: https://debian.ethz.ch/debian bookworm InRelease                                                ││No Change: https://repo.steampowered.com/steam stable InRelease                                            ││Fetched 2 KB in 0s (0 bytes/s)                                                                             │╰───────────────────────────────────────────────────────────────────────────────────────────────────────────╯Warning: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://deb.anydesk.com all InRelease: The following signatures were invalid: EXPKEYSIG 18DF3741CDFFDE29 philandro Software GmbH <info@philandro.com>Warning: See apt-secure(8) manpage for repository creation and user configuration details.Warning: Updating from such a repository can't be done securelyError: The repository 'http://deb.debian.org/debian bookworm-security Release' does not have a Release file.(base) berna@grayswan:~$ 

Code:

# deb cdrom:[Debian GNU/Linux testing _Bookworm_ - Unofficial amd64 NETINST with firmware 20220912-03:33]/ bookworm contrib main non-freedeb http://deb.debian.org/debian/ bookworm main non-free contribdeb-src http://deb.debian.org/debian/ bookworm main non-free contribdeb http://deb.debian.org/debian/ bookworm-security main contrib non-freedeb-src http://deb.debian.org/debian/ bookworm-security main contrib non-free# This system was installed using small removable media# (e.g. netinst, live or single CD). The matching "deb cdrom"# entries were disabled at the end of the installation process.# For information about how to configure apt package sources,# see the sources.list(5) manual.