Add Context to the list of sponsors (#1306)

Author: kyleconroy

README.md

@@ -24,6 +24,7 @@ sqlc development is funded by our [generous
 sponsors](https://github.com/sponsors/kyleconroy), including the following
 companies:
 
+- [Context](https://context.app)
 - [Meter](https://meter.com)
 - [ngrok](https://ngrok.com)
 - [RStudio](https://www.rstudio.com/)