v12.1.1

• [11.x] Add valid values to ensure method by @lancepioch in #54840
• Fix attribute name used on Validator instance within certain rule classes by @crynobone in #54845
• [11.x] Fix Application::interBasePath() fails to resolve application when project name is "vendor" by @crynobone in #54871
• [11.x] Test improvements by @crynobone in #54879
• [12.x] DocBlock: Changed typehint for Arr::partition method by @AndrewMast in #54896
• Enhance Email and Image Dimensions Validation Tests by @alikhosravidev in #54897
• [12.x] Apply default styling rules to the notification stub by @ahinkle in #54895