docs(README): Gradle runner (#328)

README.md

@@ -111,6 +111,7 @@ See the adapter's documentation for their specific setup instructions.
 | foundry           |    [neotest-foundry](https://github.com/llllvvuu/neotest-foundry)    |
 | zig               |    [neotest-zig](https://github.com/lawrence-laz/neotest-zig)        |
 | c++ (google test) |    [neotest-gtest](https://github.com/alfaix/neotest-gtest)          |
+| gradle            |     [neotest-gradle](https://github.com/weilbith/neotest-gradle)     |
 
 For any runner without an adapter you can use [neotest-vim-test](https://github.com/nvim-neotest/neotest-vim-test) which supports any runner that vim-test supports.
 The vim-test adapter does not support some of the more advanced features such as error locations or per-test output.