Updated GitHub logos (#1146)

* updated GitHub logos

* Optimize SVGs

* update license year to 2026

* add missing require for minitest/mock to fix CI

* try to fix rails test differently

* remove space for linting

* Revert test file changes - restore original from main

* pin minitest to 5.x and add missing require

---------

Co-authored-by: Reza Rahman <[email protected]>

Author: rezrah

.changeset/itchy-carrots-cover.md

@@ -0,0 +1,5 @@
+---
+'@primer/octicons': patch
+---
+
+Updated GitHub brand logos (`mark-github` and `logo-github`) to 2026 versions.

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2025 GitHub Inc.
+Copyright (c) 2026 GitHub Inc.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

icons/logo-github-16.svg

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2025 GitHub Inc.
+Copyright (c) 2026 GitHub Inc.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

icons/logo-github-24.svg

@@ -8,7 +8,7 @@ gem "octicons", "19.9.0"
 gem "rails"
 
 group :development, :test do
-  gem "minitest"
+  gem "minitest", "~> 5.0"
   gem "rake"
   gem "rubocop", "~> 1.0"
   gem "rubocop-github", "0.20.0"

icons/mark-github-16.svg

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2025 GitHub Inc.
+Copyright (c) 2026 GitHub Inc.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

icons/mark-github-24.svg

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require "minitest/autorun"
+require "minitest/mock"
 require "octicons_helper"
 
 include OcticonsHelper