docs(public_reference): add Pushpay as a public reference (#5036)

Adding Pushpay as public ref

Author: leandrodamascena

README.md

@@ -68,6 +68,7 @@ The following companies, among others, use Powertools:
 * [Jit Security](https://www.jit.io/)
 * [LocalStack](https://www.localstack.cloud/)
 * [Propellor.ai](https://www.propellor.ai/)
+* [Pushpay](https://pushpay.com/)
 * [Recast](https://getrecast.com/)
 * [TopSport](https://www.topsport.com.au/)
 * [Transformity](https://transformity.tech/)

docs/index.md

@@ -469,6 +469,9 @@ Knowing which companies are using this library is important to help prioritize t
 [**Propellor.ai**](https://www.propellor.ai/){target="_blank" rel="nofollow"}
 { .card }
 
+[**Pushpay**](https://pushpay.com/){target="_blank" rel="nofollow"}
+{ .card }
+
 [**Recast**](https://getrecast.com/){target="_blank" rel="nofollow"}
 { .card }