docs: add missing funding badges (#3588)

Added extra funding badges

Author: ariostas

README.md

@@ -9,11 +9,15 @@
 [![Build Test](https://github.com/scikit-hep/awkward/actions/workflows/test.yml/badge.svg?branch=main)](https://github.com/scikit-hep/awkward/actions/workflows/test.yml)
 
 [![Scikit-HEP](https://scikit-hep.org/assets/images/Scikit--HEP-Project-blue.svg)](https://scikit-hep.org/)
-[![NSF-1836650](https://img.shields.io/badge/NSF-1836650-blue.svg)](https://nsf.gov/awardsearch/showAward?AWD_ID=1836650)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.4341376.svg)](https://doi.org/10.5281/zenodo.4341376)
 [![Documentation](https://img.shields.io/badge/docs-online-success)](https://awkward-array.org/)
 [![Gitter](https://img.shields.io/badge/chat-online-success)](https://gitter.im/Scikit-HEP/awkward-array)
 
+[![NSF-1836650](https://img.shields.io/badge/NSF-1836650-blue.svg)](https://nsf.gov/awardsearch/showAward?AWD_ID=1836650)
+[![NSF-2103945](https://img.shields.io/badge/NSF-2103945-blue.svg)](https://nsf.gov/awardsearch/showAward?AWD_ID=2103945)
+[![NSF-2121686](https://img.shields.io/badge/NSF-2121686-blue.svg)](https://nsf.gov/awardsearch/showAward?AWD_ID=2121686)
+[![NSF-2323298](https://img.shields.io/badge/NSF-2323298-blue.svg)](https://nsf.gov/awardsearch/showAward?AWD_ID=2323298)
+
 Awkward Array is a library for **nested, variable-sized data**, including arbitrary-length lists, records, mixed types, and missing data, using **NumPy-like idioms**.
 
 Arrays are **dynamically typed**, but operations on them are **compiled and fast**. Their behavior coincides with NumPy when array dimensions are regular and generalizes when they're not.