fix: build.gradle is incompatible with gradle 7
fix: build.gradle is incompatible with gradle 7

emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata,emilybache/Parrot-Refactoring-Kata