Update README badges to reflect updated tool chain (#3374)

README.md

@@ -1,7 +1,7 @@
 # Vega-Altair <a href="https://altair-viz.github.io/"><img align="right" src="https://altair-viz.github.io/_static/altair-logo-light.png" height="50"></img></a>
 
 [![github actions](https://github.com/altair-viz/altair/workflows/build/badge.svg)](https://github.com/altair-viz/altair/actions?query=workflow%3Abuild)
-[![code style black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
+[![typedlib_mypy](https://www.mypy-lang.org/static/mypy_badge.svg)](https://www.mypy-lang.org)
 [![JOSS Paper](https://joss.theoj.org/papers/10.21105/joss.01057/status.svg)](https://joss.theoj.org/papers/10.21105/joss.01057)
 [![PyPI - Downloads](https://img.shields.io/pypi/dm/altair)](https://pypi.org/project/altair)
 
@@ -109,6 +109,10 @@ For bugs and feature requests, please open a [Github Issue](https://github.com/a
 
 ## Development
 
+[![Hatch project](https://img.shields.io/badge/%F0%9F%A5%9A-Hatch-4051b5.svg)](https://github.com/pypa/hatch)
+[![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
+[![pytest](https://img.shields.io/badge/logo-pytest-blue?logo=pytest&labelColor=5c5c5c&label=%20)](https://github.com/pytest-dev/pytest)
+
 You can find the instructions on how to install the package for development in [the documentation](https://altair-viz.github.io/getting_started/installation.html).
 
 To run the tests and linters, use