Summer upgrade by @raae and @olavea

[cloudinary-raae]

Hello 👋🏻

@olavea and I (@raae) are tasked with getting this plugin up-to-date 🥳

The main tasks:

• Support for Gatsby v4 support for gatsby 4 #139
• Support for gatsby-plugin-image Add support for the new Gatsby Image plugin #90

We'll also get to bugs and enhancements.

We'll also have the alternate personalities as @cloudinary-olavea and @cloudinary-raae with repo admin powers 💪