Looks like your Ubuntu PPA is broken?

[pmi123]

Ubuntu 20.0.4
sudo add-apt-repository ppa:webupd8team/brackets
[sudo] password for mark:
Repository: 'deb https://ppa.launchpadcontent.net/webupd8team/brackets/ubuntu/ jammy main'
Description:
Brackets is an open-source editor for web design and development built on top of web technologies such as HTML, CSS and JavaScript. The project was created and is maintained by Adobe, and is released under a MIT License.

More info and PPA support @ http://www.webupd8.org/2013/11/install-brackets-in-ubuntu-via-ppa-open.html
More info: https://launchpad.net/~webupd8team/+archive/ubuntu/brackets
Adding repository.
Press [ENTER] to continue or Ctrl-c to cancel.
Adding deb entry to /etc/apt/sources.list.d/webupd8team-ubuntu-brackets-jammy.list
Adding disabled deb-src entry to /etc/apt/sources.list.d/webupd8team-ubuntu-brackets-jammy.list
Adding key to /etc/apt/trusted.gpg.d/webupd8team-ubuntu-brackets.gpg with fingerprint 7B2C3B0889BF5709A105D03AC2518248EEA14886
Ign:1 http://linux.dropbox.com/ubuntu disco InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu jammy InRelease
Get:3 http://us.archive.ubuntu.com/ubuntu jammy-updates InRelease [128 kB]
Hit:4 http://linux.dropbox.com/ubuntu disco Release
Get:6 http://security.ubuntu.com/ubuntu jammy-security InRelease [129 kB]
Get:7 https://esm.ubuntu.com/apps/ubuntu jammy-apps-security InRelease [7,553 B]
Get:8 https://esm.ubuntu.com/apps/ubuntu jammy-apps-updates InRelease [7,456 B]
Get:9 https://esm.ubuntu.com/infra/ubuntu jammy-infra-security InRelease [7,450 B]
Hit:10 http://us.archive.ubuntu.com/ubuntu jammy-backports InRelease
Get:11 http://us.archive.ubuntu.com/ubuntu jammy-updates/main i386 Packages [642 kB]
Get:12 https://esm.ubuntu.com/infra/ubuntu jammy-infra-updates InRelease [7,449 B]
Hit:13 https://ppa.launchpadcontent.net/kicad/kicad-7.0-releases/ubuntu jammy InRelease
Hit:14 https://ppa.launchpadcontent.net/linuxgndu/sqlitebrowser/ubuntu jammy InRelease
Get:15 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages [1,729 kB]
Hit:16 https://ppa.launchpadcontent.net/openshot.developers/libopenshot-daily/ubuntu jammy InRelease
Get:17 http://us.archive.ubuntu.com/ubuntu jammy-updates/main Translation-en [318 kB]
Ign:18 https://ppa.launchpadcontent.net/webupd8team/brackets/ubuntu jammy InRelease
Err:19 https://ppa.launchpadcontent.net/webupd8team/brackets/ubuntu jammy Release
404 Not Found [IP: 185.125.190.80 443]
Reading package lists... Done
E: The repository 'https://ppa.launchpadcontent.net/webupd8team/brackets/ubuntu jammy Release' does not have a Release file.
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.

[abose]

That is an unofficial release not maintained by us.

We have a newer version of brackets available at https://phcode.io  please see if that fixes your issue.