.github/labeler.yml: add pop-launcher in COSMIC topic

Changed files
+1
.github
+1
.github/labeler.yml
···
- nixos/tests/cosmic.nix
- pkgs/by-name/co/cosmic-*/**/*
- pkgs/by-name/li/libcosmicAppHook/*
- pkgs/by-name/xd/xdg-desktop-portal-cosmic/*
"6.topic: crystal":
···
- nixos/tests/cosmic.nix
- pkgs/by-name/co/cosmic-*/**/*
- pkgs/by-name/li/libcosmicAppHook/*
+
- pkgs/by-name/po/pop-launcher/*
- pkgs/by-name/xd/xdg-desktop-portal-cosmic/*
"6.topic: crystal":