what the meaning of "Discovered Package: ...."

I'm new at laravel, and I'm trying to update composer, it is updated but I found some message but I can't understand it!! it is about "Discovered Package"

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C:\xampp\htdocs\FinalPoject>composer update
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 0 installs, 1 update, 0 removals
  - Updating fideloper/proxy (4.0.0 => 4.1.0): Downloading (100%)
Writing lock file
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi
Discovered Package: [32marrilot/laravel-widgets[39m
Discovered Package: [32mbeyondcode/laravel-dump-server[39m
Discovered Package: [32mfideloper/proxy[39m
Discovered Package: [32mintervention/image[39m
Discovered Package: [32mlarapack/voyager-hooks[39m
Discovered Package: [32mlaravel/nexmo-notification-channel[39m
Discovered Package: [32mlaravel/slack-notification-channel[39m
Discovered Package: [32mlaravel/tinker[39m
Discovered Package: [32mnesbot/carbon[39m
Discovered Package: [32mnunomaduro/collision[39m
Discovered Package: [32mtcg/voyager[39m
[32mPackage manifest generated successfully.[39m

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via Chebli Mohamed